{
  "manageEntity": {
    "action": "Save",
    "entityId": "356006",
    "entityType": "Track",
    "nonce": "0x3a661aa1313a6984cab5d535df92a2552df33750c0e4d2134179cb3c7d062d15",
    "signature": "0x3f2ff31bfe78f933ed9a8dced9b39a694e10039f2bea8fb58d8a768167ed257d6ef819c9a6723dc2371161703ace770a2da479051518647f781983afe9ade8101b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}