{
  "manageEntity": {
    "action": "Save",
    "entityId": "1166976618",
    "entityType": "Track",
    "nonce": "0xcdcdee40bd59114c093f1acb5d8b1bd215ce000479b685057ca7e008f3dbf4e1",
    "signature": "0x0ea2f5dafec9d1cbe258d40f917ed8650f981dd8d8d8bbdf86b2a692edc43f0843cafd38fdbe92b2d06c617c79dc99e007129bbd1da2bebe4fff1f20fc5568e51c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}