{
  "manageEntity": {
    "action": "Save",
    "entityId": "1256992131",
    "entityType": "Track",
    "nonce": "0x06aa29e36e35cb1d7603f5ef104fa7025de9790c63ecae6b5aad34e7b7caab04",
    "signature": "0xe396de25ee269b432daf5c7587a58a0f81da8e94f9fba47340ac254b527ad2c7212f307a9c948a3c278df668e3611848d382ce2f00da6611ecd11084955dadad1b",
    "signer": "0x730D61884359389d8aA22afeF2b83FF4F7c9ee63",
    "userId": "342017819"
  }
}