{
  "manageEntity": {
    "action": "Save",
    "entityId": "699778132",
    "entityType": "Track",
    "nonce": "0x2ea8eaa9ee434ded5e3f13e84c372fd15a5bfc2bf9df54562c41a47cb195dcc4",
    "signature": "0x06884cd4d898c54c998a16ae729ac59d42e3b4758b10b664c3246b880c43fed92377d95b7ed63b5ac8bb38586b8258629509b80e8e92db79a4a109138ed3858a1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}