diff --git a/demo/api_demo/co_signer/co_signer_converter_demo.py b/demo/api_demo/co_signer/co_signer_converter_demo.py
index e6994ba..05870a9 100644
--- a/demo/api_demo/co_signer/co_signer_converter_demo.py
+++ b/demo/api_demo/co_signer/co_signer_converter_demo.py
@@ -16,13 +16,15 @@ def test_co_signer_converter(self):
         config = read_yaml("./config.yaml")
         converter = CoSignerConverter(config)
         # The CoSignerCallBack received by the controller
+        # Visit the following link to view the request data specification：https://docs.safeheron.com/api/en.html#API%20Co-Signer%20Request%20Data
         co_signer_call_back = {}
-        biz_content = converter.request_convert(co_signer_call_back)
+        biz_content = converter.request_v3_convert(co_signer_call_back)
         # According to different types of CoSignerCallBack, the customer handles the corresponding type of business logic.
         print(biz_content)
 
-        coSignerResponse = CoSignerResponse()
-        coSignerResponse.approve = True
-        coSignerResponse.txKey = "TxKey that needs to be approved"
-        encryptResponse = converter.response_converter_with_new_crypto_type(coSignerResponse)
+        # Visit the following link to view the response data specification.：https://docs.safeheron.com/api/en.html#Approval%20Callback%20Service%20Response%20Data
+        coSignerResponse = CoSignerResponseV3()
+        coSignerResponse.action = "<Replace with APPROVE or REJECT>"
+        coSignerResponse.approvalId = "<Replace with the approvalId data from the request>"
+        encryptResponse = converter.response_v3_converter(coSignerResponse)
         # The customer returns encryptResponse after processing the business logic.
diff --git a/demo/api_demo/co_signer/config.yaml.example b/demo/api_demo/co_signer/config.yaml.example
index be2b57a..355e65d 100644
--- a/demo/api_demo/co_signer/config.yaml.example
+++ b/demo/api_demo/co_signer/config.yaml.example
@@ -1,6 +1,6 @@
-# RSA private key (biz_privkey) is configured in the audit service, as an alternative, you can use bizPrivKeyPemFile to config your bizPrivKey
-bizPrivKey: MIIJRQIBA*******DtGRBdennqu8g95jcrMxCUhsifVgzP6vUyg==
-# path to your private key file, pem encoded. BizPrivKeyPemFile priority is higher than bizPrivKey.
-bizPrivKeyPemFile: './my_private.pem'
-# RSA public key (api_pubkey) is used in the API Key configuration on Safeheron Web Console.
-apiPubKey: MIICI****QuTOTECAwEAAQ==
\ No newline at end of file
+# The private key used by the Approval Callback Service must be the private key that corresponds to the public key uploaded when creating the API Key.
+approvalCallbackServicePrivateKey: MIIJRQIBA*******DtGRBdennqu8g95jcrMxCUhsifVgzP6vUyg==
+# path to your private key file, pem encoded. approvalCallbackServicePrivateKeyPemFile priority is higher than approvalCallbackServicePrivateKey.
+approvalCallbackServicePrivateKeyPemFile: './my_private.pem'
+# Use the export-public-key command of the API Co-Signer CLI to export the API Co-Signer's public key.
+coSignerPubKey: MIICI****QuTOTECAwEAAQ==