{
 "Cisco-IOS-XR-ifmgr-cfg:interface-configurations": {
  "interface-configuration": [
   {
    "active": "act",
    "interface-name": "Loopback201",
    "description": "New Loopback 201"
   },
   {
    "active": "act",
    "interface-name": "Loopback301",
    "description": "New Loopback 201"
   }
  ]
 }
}