{
  "manageEntity": {
    "action": "Save",
    "entityId": "1270837919",
    "entityType": "Track",
    "nonce": "0xb651fafcfe2b6bd5e689b32ad5a10286c245364433f20922506f71655d29d555",
    "signature": "0xca0cebd7a007ee5791a5525353df1017e5a0b06065e752e4bcbbdbce24e6cecb3d70194efd667a033ecf47a9e2327c858c9c8791831ae596d48594106d2e6c881c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}