{
  "manageEntity": {
    "action": "Save",
    "entityId": "767017",
    "entityType": "Track",
    "nonce": "0x033d89cfd14636fa94e66215cf04f0d166f1779a7df1d9f6c21c3944d8ac9973",
    "signature": "0xea2c84aab4e55cd3dcd3685b020384232b8ea858b53b0403450e447243f7044c3e428dd722c81977e27e2198df7f0107c35ff6d25819deb697c37a1dbca173d61c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}