{
  "manageEntity": {
    "action": "Save",
    "entityId": "30447099",
    "entityType": "Track",
    "nonce": "0xdc80e273b8cac6d78bcf106d884f25ca40cacab285b459e353d0ec808b5cc2f1",
    "signature": "0x028f3e8f0bca00bafd3c2381233c08392bfae0050861415e0a1a46060220474c2886b27970c9ecc00e217d58fe4cb5412c340b120fe647df534b987a769ca79d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}