{
  "manageEntity": {
    "action": "Save",
    "entityId": "1030634",
    "entityType": "Track",
    "nonce": "0xa78fd1724f47ef92605b8a8c2f826711699a336cf6998c6eb34424b5ea73e382",
    "signature": "0x5712110531a26435f6b9513d93f12fa551b74a0d02b6f34964da8461fe5d0a0a099fffc9273d189f7a5e0c46195dafa99c3431d53e4c4e7408accc4c035b9c061b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}