{
  "manageEntity": {
    "action": "Save",
    "entityId": "1171758525",
    "entityType": "Track",
    "nonce": "0x6d0574a60c601b31006b42e3956ef6234b8def7e2dff589d194d71db8cc4752f",
    "signature": "0x876c73e5a3ebf802d3bddd7031b47daad9e463db4871ec7852516d5166c3703f12493f63683116c0ac53841e19d4a1e58bc206dfe75a2e995e7efedae5b49e311b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}