{
  "manageEntity": {
    "action": "Save",
    "entityId": "544309",
    "entityType": "Track",
    "nonce": "0xbd96cbc24c26fdefead6610ccaaed708bdc2f4eed5f00e29c0bc1570bdacce4d",
    "signature": "0x11bde183aa3b862c56962c7e28cc4fc4509d9b4a18f705d3d77703e02e773e2b2c998f93ce5c0ca7764d993dffe6ecf33bc3323d63371c5f783135e3db80c4e01c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}