{
  "manageEntity": {
    "action": "Save",
    "entityId": "1416946406",
    "entityType": "Track",
    "nonce": "0xe7d43b1e1a194340b065ad16c74f5b8d8339b513e1f92c2fd40e529aa6e8dae3",
    "signature": "0x0e5401141a8d00d5641be98bfe90ee4c6c468c5d0fad95f60e07eda8bb08958856e1ce251bf4e842bd2f2b915171aa6ecd72abf8b4977b977b9b47c1f80becde1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}