{
  "manageEntity": {
    "action": "Save",
    "entityId": "714474124",
    "entityType": "Track",
    "nonce": "0x1eabf6ff39353fe87347328d878b2b80b9a7dfa58a6280d86f97b4354f89d174",
    "signature": "0x1b464c62d44008fd498ecc9ac061e041aaf2c6e9e149cd2b53cd2caa133526df04ae0cb14396deff506852e09863f4913994cb27630cacba2a31dd75fc433dd51c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}