{
    "template_data":{
        "category":[
            {
                "name":"Other settings",
                "subcategory":[
                    {
                        "name":"other",
                        "item":[
                            {
                                "variable":"$DNSSrv1",
                                "default_value":"0.0.0.0",
                                "description":"Primary DNS server",
                                "type":"input"
                            }
                        ]
                    }
                ]
            }
        ]
    }
}