[
  {
    "id": "menu_link_content:test",
    "children": [
      {
        "id": "menu_link_content:test2",
        "children": [],
        "parent": "menu_link_content:test"
      },
      {
        "id": "menu_link_content:test3",
        "children": [
          {
            "id": "menu_link_content:test4",
            "children": [],
            "parent": "menu_link_content:test3"
          }
        ],
        "parent": "menu_link_content:test"
      }
    ],
    "parent": ""
  }
]