{
  "manageEntity": {
    "action": "Save",
    "entityId": "1635413147",
    "entityType": "Track",
    "nonce": "0xc65aa9f073525e0d8964e278b69f2959f2f5e487896f696e8bf7e152795db23e",
    "signature": "0x56ca68758a4448a8d87eee94ae9a7eb615995bc5fcac7c112262b8fc27e15a22783e801c346050496fdb9048dce5b3295f04ec0d19fb448b8f52222505d3a9f61c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}