{
  "manageEntity": {
    "action": "Save",
    "entityId": "823303583",
    "entityType": "Track",
    "nonce": "0xd5789839e8a2c9dacc2db1f05aa0c8116fc2cab58abb3994b16098837d095727",
    "signature": "0x5c9b6573c856b2465bd43967b31db4619cf1595dc29e8d49b4d7d42258c2857f11f8c53efa5063d084d5756e81e17c8a10f3e01afdf172bb043b22daf3348ca71c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}