{
  "manageEntity": {
    "action": "Save",
    "entityId": "2136227208",
    "entityType": "Track",
    "nonce": "0xcd2f492ad93b6a0ebe157a31d5ea99f85996621547b48e6c8a9afb9526ba3615",
    "signature": "0x58ba55be56c72bfc1b9b068d43ff9ddedd51e4d644b44560c8aa8d0f79ec56d91715a575493f770665a8e23a8c7012d314f5ce9db2f56f9702a90f9f0c6809141b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}