{
  "manageEntity": {
    "action": "Save",
    "entityId": "1120599",
    "entityType": "Track",
    "nonce": "0x9327634e89e21f49134375c4a75acd3f0d6c461dc51fbd7a5e13b29401f2a66b",
    "signature": "0x7f08e3a63946a8bbd77b0bede7a6917014e0906d2fbffa07fc97ce93adb9c2532abed9dd1121f1a5f39e310d9c96eea5fa934d6658261bc4239f490bbcbb96331c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}