{
  "manageEntity": {
    "action": "Save",
    "entityId": "1045537774",
    "entityType": "Track",
    "nonce": "0x4ee7ebf3bd7af67439224ad598fd74d2c0002d35d0783fdaff4032956fdc9bdf",
    "signature": "0xfb751f49e22d9114cd873e9b24a1418ddc7633ec9b878fde7c9c6fafac4e49241399ac90bfe36a12ec51cb8763b0fa2aa2d84c822c233ee74e63d3a00987d6691b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}