change token price oracle sign pkg to new one

token-price-oracle/client/l2_client.go

@@ -5,14 +5,14 @@ import (
 	"fmt"
 	"math/big"
 
-	"github.com/morph-l2/externalsign"
+	"morph-l2/token-price-oracle/config"
 	"github.com/morph-l2/go-ethereum/accounts/abi/bind"
 	"github.com/morph-l2/go-ethereum/common"
 	"github.com/morph-l2/go-ethereum/core/types"
 	"github.com/morph-l2/go-ethereum/crypto"
 	"github.com/morph-l2/go-ethereum/ethclient"
 	"github.com/morph-l2/go-ethereum/log"
-	"morph-l2/token-price-oracle/config"
+	"github.com/morph-l2/remote-signer-client/go/signer"
 )
 
 // L2Client wraps L2 chain client
@@ -64,20 +64,22 @@ func NewL2Client(rpcURL string, cfg *config.Config) (*L2Client, error) {
 
 	if cfg.ExternalSign {
 		// External sign mode
-		rsaPriv, err := externalsign.ParseRsaPrivateKey(cfg.ExternalSignRsaPriv)
+		rsaPriv, err := signer.ParseRsaPrivateKey(cfg.ExternalSignRsaPriv)
 		if err != nil {
 			return nil, fmt.Errorf("failed to parse RSA private key: %w", err)
 		}
 
-		l2Client.signer = NewSigner(
-			true,
+		l2Client.signer, err = NewSigner(
 			cfg.ExternalSignAppid,
 			rsaPriv,
 			cfg.ExternalSignAddress,
 			cfg.ExternalSignChain,
 			cfg.ExternalSignUrl,
 			chainID,
 		)
+		if err != nil {
+			return nil, fmt.Errorf("failed to create signer: %w", err)
+		}
 
 		fromAddr := common.HexToAddress(cfg.ExternalSignAddress)
 		ethSigner := types.NewLondonSigner(chainID)

token-price-oracle/client/sign.go

@@ -6,75 +6,43 @@ import (
 	"fmt"
 	"math/big"
 
-	"github.com/morph-l2/externalsign"
 	"github.com/morph-l2/go-ethereum"
 	"github.com/morph-l2/go-ethereum/common"
 	"github.com/morph-l2/go-ethereum/core/types"
 	"github.com/morph-l2/go-ethereum/log"
+	remotesigner "github.com/morph-l2/remote-signer-client/go/signer"
 )
 
 // Signer handles transaction signing with support for both local and external signing
 type Signer struct {
-	externalSign        bool
-	externalSigner      *externalsign.ExternalSign
-	externalSignUrl     string
+	remoteClient        *remotesigner.Client
 	externalSignAddress common.Address
 	chainID             *big.Int
-	signer              types.Signer
 }
 
 // NewSigner creates a new Signer instance
 func NewSigner(
-	externalSign bool,
-	externalSignAppid string,
-	externalRsaPriv *rsa.PrivateKey,
-	externalSignAddress string,
-	externalSignChain string,
-	externalSignUrl string,
+	appid string,
+	rsaPriv *rsa.PrivateKey,
+	address string,
+	chain string,
+	url string,
 	chainID *big.Int,
-) *Signer {
-	signer := types.NewLondonSigner(chainID)
-
-	s := &Signer{
-		externalSign:        externalSign,
-		externalSignUrl:     externalSignUrl,
-		externalSignAddress: common.HexToAddress(externalSignAddress),
-		chainID:             chainID,
-		signer:              signer,
-	}
-
-	if externalSign {
-		s.externalSigner = externalsign.NewExternalSign(
-			externalSignAppid,
-			externalRsaPriv,
-			externalSignAddress,
-			externalSignChain,
-			signer,
-		)
-		log.Info("External signer initialized",
-			"address", externalSignAddress,
-			"chain", externalSignChain)
-	}
-
-	return s
-}
-
-// Sign signs a transaction using either external or local signing
-func (s *Signer) Sign(tx *types.Transaction) (*types.Transaction, error) {
-	if !s.externalSign {
-		return nil, fmt.Errorf("local signing not supported in Signer, use bind.TransactOpts")
-	}
-
-	signedTx, err := s.externalSigner.RequestSign(s.externalSignUrl, tx)
+) (*Signer, error) {
+	remoteClient, err := remotesigner.NewClient(appid, rsaPriv, address, chain, url, types.NewLondonSigner(chainID))
 	if err != nil {
-		return nil, fmt.Errorf("external sign request failed: %w", err)
+		return nil, fmt.Errorf("failed to create remote signer client: %w", err)
 	}
-	return signedTx, nil
-}
 
-// IsExternalSign returns whether external signing is enabled
-func (s *Signer) IsExternalSign() bool {
-	return s.externalSign
+	log.Info("External signer initialized",
+		"address", address,
+		"chain", chain)
+
+	return &Signer{
+		remoteClient:        remoteClient,
+		externalSignAddress: common.HexToAddress(address),
+		chainID:             chainID,
+	}, nil
 }
 
 // GetFromAddress returns the signer's address
@@ -88,6 +56,7 @@ func (s *Signer) CreateAndSignTx(
 	client *L2Client,
 	to common.Address,
 	callData []byte,
+	methodSig string,
 ) (*types.Transaction, error) {
 	from := s.externalSignAddress
 
@@ -134,8 +103,9 @@ func (s *Signer) CreateAndSignTx(
 		"nonce", nonce,
 		"gas", gas,
 		"gasFeeCap", caps.FeeCap,
-		"gasTipCap", caps.TipCap)
+		"gasTipCap", caps.TipCap,
+		"methodSig", methodSig)
 
 	// Sign transaction
-	return s.Sign(tx)
+	return s.remoteClient.Sign(tx, methodSig)
 }

token-price-oracle/go.mod

@@ -8,8 +8,8 @@ replace (
 )
 
 require (
-	github.com/morph-l2/externalsign v0.3.1
 	github.com/morph-l2/go-ethereum v1.10.14-0.20260211074551-4f0f6e6bd141
+	github.com/morph-l2/remote-signer-client/go v0.0.0-20260312080033-d078d86ddbe9
 	github.com/prometheus/client_golang v1.17.0
 	github.com/sirupsen/logrus v1.9.3
 	github.com/urfave/cli v1.22.17
@@ -36,7 +36,7 @@ require (
 	github.com/go-kit/kit v0.12.0 // indirect
 	github.com/go-logfmt/logfmt v0.6.0 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
-	github.com/go-resty/resty/v2 v2.13.1 // indirect
+	github.com/go-resty/resty/v2 v2.17.2 // indirect
 	github.com/go-stack/stack v1.8.1 // indirect
 	github.com/golang-jwt/jwt/v4 v4.5.0 // indirect
 	github.com/golang/snappy v0.0.5-0.20220116011046-fa5810519dcb // indirect
@@ -59,6 +59,7 @@ require (
 	github.com/mmcloughlin/addchain v0.4.0 // indirect
 	github.com/olekukonko/tablewriter v0.0.5 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/prometheus/client_model v0.5.0 // indirect
 	github.com/prometheus/common v0.45.0 // indirect
 	github.com/prometheus/procfs v0.12.0 // indirect
@@ -76,12 +77,12 @@ require (
 	github.com/tklauser/numcpus v0.7.0 // indirect
 	github.com/tyler-smith/go-bip39 v1.1.0 // indirect
 	github.com/yusufpapurcu/wmi v1.2.3 // indirect
-	golang.org/x/crypto v0.35.0 // indirect
-	golang.org/x/net v0.25.0 // indirect
-	golang.org/x/sync v0.11.0 // indirect
-	golang.org/x/sys v0.30.0 // indirect
-	golang.org/x/text v0.22.0 // indirect
-	golang.org/x/time v0.5.0 // indirect
+	golang.org/x/crypto v0.41.0 // indirect
+	golang.org/x/net v0.43.0 // indirect
+	golang.org/x/sync v0.16.0 // indirect
+	golang.org/x/sys v0.35.0 // indirect
+	golang.org/x/text v0.28.0 // indirect
+	golang.org/x/time v0.12.0 // indirect
 	google.golang.org/protobuf v1.33.0 // indirect
 	gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce // indirect
 	gopkg.in/urfave/cli.v1 v1.20.0 // indirect

token-price-oracle/go.sum

@@ -67,8 +67,8 @@ github.com/go-logfmt/logfmt v0.6.0/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KE
 github.com/go-ole/go-ole v1.2.6/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0=
 github.com/go-ole/go-ole v1.3.0 h1:Dt6ye7+vXGIKZ7Xtk4s6/xVdGDQynvom7xCFEdWr6uE=
 github.com/go-ole/go-ole v1.3.0/go.mod h1:5LS6F96DhAwUc7C+1HLexzMXY1xGRSryjyPPKW6zv78=
-github.com/go-resty/resty/v2 v2.13.1 h1:x+LHXBI2nMB1vqndymf26quycC4aggYJ7DECYbiz03g=
-github.com/go-resty/resty/v2 v2.13.1/go.mod h1:GznXlLxkq6Nh4sU59rPmUw3VtgpO3aS96ORAI6Q7d+0=
+github.com/go-resty/resty/v2 v2.17.2 h1:FQW5oHYcIlkCNrMD2lloGScxcHJ0gkjshV3qcQAyHQk=
+github.com/go-resty/resty/v2 v2.17.2/go.mod h1:kCKZ3wWmwJaNc7S29BRtUhJwy7iqmn+2mLtQrOyQlVA=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/go-stack/stack v1.8.1 h1:ntEHSVwIt7PNXNpgPmVfMrNhLtgjlmnZha2kOpuRiDw=
 github.com/go-stack/stack v1.8.1/go.mod h1:dcoOX6HbPZSZptuspn9bctJ+N/CnF5gGygcUP3XYfe4=
@@ -145,10 +145,10 @@ github.com/mmcloughlin/addchain v0.4.0/go.mod h1:A86O+tHqZLMNO4w6ZZ4FlVQEadcoqky
 github.com/mmcloughlin/profile v0.1.1/go.mod h1:IhHD7q1ooxgwTgjxQYkACGA77oFTDdFVejUS1/tS/qU=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
-github.com/morph-l2/externalsign v0.3.1 h1:UYFDZFB0L85A4rDvuwLNBiGEi0kSmg9AZ2v8Q5O4dQo=
-github.com/morph-l2/externalsign v0.3.1/go.mod h1:b6NJ4GUiiG/gcSJsp3p8ExsIs4ZdphlrVALASnVoGJE=
 github.com/morph-l2/go-ethereum v1.10.14-0.20260211074551-4f0f6e6bd141 h1:A8eygErKU6WKMipGWIemzwLeYkIGLd9yb/Ry3x+J9PQ=
 github.com/morph-l2/go-ethereum v1.10.14-0.20260211074551-4f0f6e6bd141/go.mod h1:nkVzHjQWCOjvukQW8ittlwX+Xz9gmVHrP7mUi7zoHTs=
+github.com/morph-l2/remote-signer-client/go v0.0.0-20260312080033-d078d86ddbe9 h1:d2nKLUgiEJsQmpSWEiGbsC+sZXQCM4y/3EzyXkoMM60=
+github.com/morph-l2/remote-signer-client/go v0.0.0-20260312080033-d078d86ddbe9/go.mod h1:slD6GmYEwLHn4Yj/kO8/1QF3iaYlVVAXg2ZnGr8SW/8=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
@@ -237,72 +237,49 @@ github.com/tyler-smith/go-bip39 v1.1.0/go.mod h1:gUYDtqQw1JS3ZJ8UWVcGTGqqr6YIN3C
 github.com/urfave/cli v1.22.17 h1:SYzXoiPfQjHBbkYxbew5prZHS1TOLT3ierW8SYLqtVQ=
 github.com/urfave/cli v1.22.17/go.mod h1:b0ht0aqgH/6pBYzzxURyrM4xXNgsoT/n2ZzwQiEhNVo=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 github.com/yusufpapurcu/wmi v1.2.3 h1:E1ctvB7uKFMOJw3fdOW32DwGE9I7t++CRUEMKvFoFiw=
 github.com/yusufpapurcu/wmi v1.2.3/go.mod h1:SBZ9tNy3G9/m5Oi98Zks0QjeHVDvuK0qfxQmPyzfmi0=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
-golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
-golang.org/x/crypto v0.35.0 h1:b15kiHdrGCHrP6LvwaQ3c03kgNhhiMgvlhxHQhmg2Xs=
-golang.org/x/crypto v0.35.0/go.mod h1:dy7dXNW32cAb/6/PRuTNsix8T+vJAqvuIy5Bli/x0YQ=
+golang.org/x/crypto v0.41.0 h1:WKYxWedPGCTVVl5+WHSSrOBT0O8lx32+zxmHxijgXp4=
+golang.org/x/crypto v0.41.0/go.mod h1:pO5AFd7FA68rFak7rOAGVuygIISepHftHnr8dr6+sUc=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
 golang.org/x/net v0.0.0-20220225172249-27dd8689420f/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
 golang.org/x/net v0.0.0-20220607020251-c690dde0001d/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
-golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
-golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
-golang.org/x/net v0.25.0 h1:d/OCCoBEUq33pjydKrGQhw7IlUPI2Oylr+8qLx49kac=
-golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
+golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
+golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.11.0 h1:GGz8+XQP4FvTTrjZPzNKTMFtSXH80RAzG+5ghFPgK9w=
-golang.org/x/sync v0.11.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=
+golang.org/x/sync v0.16.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
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token-price-oracle/updater/token_price.go

@@ -202,9 +202,13 @@ func (u *PriceUpdater) update(ctx context.Context) error {
 		"total_tokens", len(tokenIDs))
 
 	// Step 3: Update prices on L2
+	methodSig, err := abiMethodSig(bindings.L2TokenRegistryMetaData, "batchUpdatePrices")
+	if err != nil {
+		return fmt.Errorf("failed to resolve method sig: %w", err)
+	}
 	receipt, err := u.txManager.SendTransaction(ctx, func(auth *bind.TransactOpts) (*types.Transaction, error) {
 		return u.registryContract.BatchUpdatePrices(auth, tokenIDsToUpdate, pricesToUpdate)
-	})
+	}, methodSig)
 
 	if err != nil {
 		log.Error("Failed to send transaction", "error", err)

token-price-oracle/updater/tx_manager.go

@@ -13,6 +13,20 @@ import (
 	"morph-l2/token-price-oracle/client"
 )
 
+// abiMethodSig returns the canonical method signature string (e.g. "batchUpdatePrices(uint16[],uint256[])")
+// for the named method, looked up from the contract's MetaData ABI.
+func abiMethodSig(meta *bind.MetaData, method string) (string, error) {
+	parsed, err := meta.GetAbi()
+	if err != nil {
+		return "", fmt.Errorf("failed to parse ABI: %w", err)
+	}
+	m, ok := parsed.Methods[method]
+	if !ok {
+		return "", fmt.Errorf("method %q not found in ABI", method)
+	}
+	return m.Sig, nil
+}
+
 // TxManager manages transaction sending to avoid nonce conflicts
 type TxManager struct {
 	l2Client *client.L2Client
@@ -29,12 +43,14 @@ func NewTxManager(l2Client *client.L2Client) *TxManager {
 // SendTransaction sends a transaction in a thread-safe manner
 // It ensures only one transaction is sent at a time to avoid nonce conflicts
 // Before sending, it checks if there are any pending transactions by comparing nonces
-func (m *TxManager) SendTransaction(ctx context.Context, txFunc func(*bind.TransactOpts) (*types.Transaction, error)) (*types.Receipt, error) {
+// methodSig is the human-readable method signature (e.g. "batchUpdatePrices(uint16[],uint256[])")
+// and is only used for external signing (remote signer V2 API).
+func (m *TxManager) SendTransaction(ctx context.Context, txFunc func(*bind.TransactOpts) (*types.Transaction, error), methodSig string) (*types.Receipt, error) {
 	m.mu.Lock()
 	defer m.mu.Unlock()
 
 	if m.l2Client.IsExternalSign() {
-		return m.sendWithExternalSign(ctx, txFunc)
+		return m.sendWithExternalSign(ctx, txFunc, methodSig)
 	}
 	return m.sendWithLocalSign(ctx, txFunc)
 }
@@ -115,7 +131,7 @@ func (m *TxManager) sendWithLocalSign(ctx context.Context, txFunc func(*bind.Tra
 }
 
 // sendWithExternalSign sends transaction using external signing service
-func (m *TxManager) sendWithExternalSign(ctx context.Context, txFunc func(*bind.TransactOpts) (*types.Transaction, error)) (*types.Receipt, error) {
+func (m *TxManager) sendWithExternalSign(ctx context.Context, txFunc func(*bind.TransactOpts) (*types.Transaction, error), methodSig string) (*types.Receipt, error) {
 	signer := m.l2Client.GetSigner()
 	if signer == nil {
 		return nil, fmt.Errorf("external signer is not initialized")
@@ -172,7 +188,7 @@ func (m *TxManager) sendWithExternalSign(ctx context.Context, txFunc func(*bind.
 		"calldata_len", len(callData))
 
 	// Create and sign transaction using external signer
-	signedTx, err := signer.CreateAndSignTx(ctx, m.l2Client, toAddr, callData)
+	signedTx, err := signer.CreateAndSignTx(ctx, m.l2Client, toAddr, callData, methodSig)
 	if err != nil {
 		return nil, fmt.Errorf("failed to create and sign transaction: %w", err)
 	}