{
  "manageEntity": {
    "action": "Save",
    "entityId": "596336",
    "entityType": "Track",
    "nonce": "0x4a10693f02816d88719aeea7ef79d2581a54f10a791a5460ef0c656613fa3dad",
    "signature": "0xfb85bd97e8f2cb3d56594bec677867a32b9027b367897e96cc52fca9aefd68b5179c0f4fd8beb8a124ee83a63804dbb659325189a0ee5787e94090541338b8aa1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}