{
  "manageEntity": {
    "action": "Save",
    "entityId": "1480010935",
    "entityType": "Track",
    "nonce": "0x9758787bdbcab581f83512f8abcba56b4214c13d0964d8fb11c83bb96b76e424",
    "signature": "0xef2d8c20c9d4d7ae26f32285b9540266baf45cd24034f49e628e3d8e6f1e81b4576dcea8641bf23845c4750600b10ff23346d38e59bb9824f7fddf02dddd63dd1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}