{
  "manageEntity": {
    "action": "Save",
    "entityId": "1960944095",
    "entityType": "Track",
    "nonce": "0x410174db7091dba740acb8b1aca27224a9d2511506f2d08ccb8c59e2cbbd2a00",
    "signature": "0xee277a53492c2bf40c8efe316bec3dc142fdabbcf13ca147ba082b5b65afd92e3fdf57b53c67e6823e8660e7be7775acaddfec5fcd5e94e6c95bb9cc602add1a1c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}