{
  "manageEntity": {
    "action": "Save",
    "entityId": "320236",
    "entityType": "Track",
    "nonce": "0x097bb39ca82d6f38a4fd661bbf7f6cdfc7dccb645b23b8d94360a988597b5073",
    "signature": "0x01ed9d8c54bbd8dc2c96260adeb849c284ea6c94566d876f9bf9979bf7526aa36652c6b530eda8b86cb94d2c7f770e1c98a3648b8ca3ddd07c4898c38522d35f1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}