{
  "manageEntity": {
    "action": "Save",
    "entityId": "861042321",
    "entityType": "Track",
    "nonce": "0x0a65fbe6357a3f6d639eddfbadff35701ce973838d29d5b43454874dca1aeb8d",
    "signature": "0x33e0e5719b0cd201ddb9b8de2793595e7d064f7e4b86ead7dbd8769a7891900364596ed2fe9f16164302db563b5ab6fa4ae3faed0be5a36f74c684d50d4cd0a51b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}