{
  "manageEntity": {
    "action": "Save",
    "entityId": "1517910444",
    "entityType": "Track",
    "nonce": "0x149f26c28796b40f61cd366da15c21752606f41bc72b4508f6f63d1d82208f4a",
    "signature": "0xdd7f246a7a728fa7fe8e2c898ad2588a36177da3e68b2af9d0d7ad284b9838bf000606a19f9bfa7c6aa329769e9ee92f7b628c14eab78a48eefee9063742d6d91c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}