{
  "manageEntity": {
    "action": "Save",
    "entityId": "1056002731",
    "entityType": "Track",
    "nonce": "0x898ed0bd9b408811d9b8edf4b422301e0c7f52241e188650ebc4dec48bed4bce",
    "signature": "0x61b2702d9d8fce09dc844eebbc68c663a26e29fdb9faa709d159dd172bb62a466d284975faf95b8afca02e14b4dee3aee453faa4e69d4cca4805e52d07410cc21b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}