{
  "manageEntity": {
    "action": "Save",
    "entityId": "1316948149",
    "entityType": "Track",
    "nonce": "0xf38ac615c9cce0abd589d49a21fb4661fb94fb8ca29e6d8a345e8f19aa7b3282",
    "signature": "0x42346d511fb3be155828026e71fea6dcb788f3bcebb3379b00996e92996f64266636127b1580c872eab8e53433f9b8fb74509901047b4791a7fe61ff67cc153d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}