Main Navigation Menu

"main_navigation_menu":{
  "items": [ //max 40 items
    {
      "id": XXXXX,
      "name": "name",
      "slug": "", //home, all_products, all_cetgories
      "url": "<https://mystore.com/slug>",
      "extra": {
        "SEO_category_title": "category title",
        "SEO_category_description": "category des",
        "image": null,
        "img_alt_text": null,
        "cover_image": null,
        "products_count": 1,
      },
      "items": [
        //sub items
      ]
    }
  ]
}