{
  "manageEntity": {
    "action": "Save",
    "entityId": "2039439610",
    "entityType": "Track",
    "nonce": "0x6e42ca0b0032f81211ffecddb1a745327a2c5c5267c0b52dfdff1f3028cbb9e6",
    "signature": "0x5f8f0c2ceb4d20a0351130b1d70bea20449f3697a046a26ec1f38c80fe7f25c668509b72169311697267be0f6ef545fb891f808a4e91bf02ea934fd24ddb23301c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}