{
  "manageEntity": {
    "action": "Save",
    "entityId": "1118998",
    "entityType": "Track",
    "nonce": "0xef06ed4c63aa62ba929efcf2b68b927b7d85ba1fc9c19ff2fbbfba0be4a736fa",
    "signature": "0xbe3351e73b585774f27cec0633b676513f10a5426ea092b8ee35bcaf0919ff606e31304094a85667a6b6846110f0ee82b9053cfb58a0bc37da622a9bee466ac11c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}