{
  "manageEntity": {
    "action": "Save",
    "entityId": "1042036",
    "entityType": "Track",
    "nonce": "0xc8a1be3d9bed73be03a95c85522156f7e71563723e72c021c2c5dd37550f949a",
    "signature": "0x81937585726907e2f950b2969a9d5906fb9065fdaed5ac2ea8e089f8cd70eb335b07a8d26b0f9dabf8f53ffa375043ef3f5b19a0d15a977a0581a50c0a0a978e1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}