{
  "manageEntity": {
    "action": "Save",
    "entityId": "270",
    "entityType": "Track",
    "nonce": "0x4470db73dbe4f0518319d860c5aa8617e3e753f7b0d62831ad68639e0f253e62",
    "signature": "0x90a42f3f3f0a5926a84807b58c7a53c521d4d61b3287223f76bc38b5cbb20e337db8aa6ad227e72826a153131dd47ddb1a988b8085bfb9838b78a6b4d3580f651b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}