{
    "action": "add_pagedata_structure",
    "pagedata": [
        {
            "name": "Content title",
            "order": 0,
            "items": [
                {
                    "order": 0,
                    "data": [
                        {
                            "name": "Content title",
                            "order": 0
                        }
                    ]
                }
            ]
        },
        {
            "name": "Content",
            "order": 1,
            "items": [
                {
                    "order": 0,
                    "data": [
                        {
                            "name": "Content",
                            "order": 0,
                            "type": "textarea",
                            "css_class": "tinymce"
                        }
                    ]
                }
            ]
        }
    ]
}