{
  "manageEntity": {
    "action": "Save",
    "entityId": "635391",
    "entityType": "Track",
    "nonce": "0x2e491d898c16089266f8ab5caef7e5c4e911a2b5c1bf95ab40af9b4620d1e036",
    "signature": "0x844742b0f1f8cb3591af52f0fe105cc9ce50a799743a349e957ec6362dae9b96545164ea1f66a51f831076419d64863d257b40cfbdcb20928804d6dc9e5e15641b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}