{
  "$schema": "https://www.atsc-schemas.org/atsc3.0/a344/20230217/org.atsc.unsubscribe-request.json",
    "jsonrpc": "2.0",
    "method": "org.atsc.unsubscribe",
    "params": {
        "msgType": ["All"]
    },
    "id": 52
}