{
  "manageEntity": {
    "action": "Save",
    "entityId": "33582563",
    "entityType": "Track",
    "nonce": "0x40fdb0f28f4722df28ee480020516709c7c116825c0be53939e53cde07dbd6be",
    "signature": "0x8cbb4bb4e53c3ad40e752a3c994d46abdd9096f4c89d603372068222692430c54476ef4a9d1f6c845ba94e0cf2ffb0ea041364e22e8861d6ac842f10b31b16151b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}