{
    "fields": {
        "title": {
            "label": "Title of the Bookmarks List"
        },
        "description": {
            "label": "Description"
        },
        "bookmarks": {
            "toolbarSticky": true,
            "fields": {
                "item": {
                    "fields": {
                        "title": {
                            "label": "Bookmark Title"
                        },
                        "url": {
                            "type": "url",
                            "label": "Bookmark URL"
                        }
                    }
                }
            }
        }
    }
}