{
  "manageEntity": {
    "action": "Save",
    "entityId": "893910913",
    "entityType": "Track",
    "nonce": "0x02f1c716945afbfde0fc04f00e3af849a837934b2779b677adbb72e21b055ecf",
    "signature": "0x8049de83449d2cdb74a05d704cc7909fc02c49aa20f0a6b659006221d747de9736aac02b54c5c929836dcc45787a0d6834d36f3fde1a5103e94032b3f52f4a231c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}