{
  "manageEntity": {
    "action": "Save",
    "entityId": "240285",
    "entityType": "Track",
    "nonce": "0x07d3fd3cf3bba9883f7c5f6147df2ed3cc70e197904933cb64bd15f9b2eb12ea",
    "signature": "0xaed723c79926a037ae4e071133dd82ed3d2adda4adeb20e36d6f666088b4bc56289d1e1bc12b1415f3985d9c034223cf61594a7e6ed4848da5ab04b6f3a5cadb1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}