main/index.json

{
    "type": "index",
    "subCategories": [
        {
            "id": "leisure_sport_shopping",
            "type": "index",
            "subCategories": [
                {
                    "id": "gastro"
                },
                {
                    "id": "shop"
                },
                {
                    "id": "children"
                }
            ]
        },
        {
            "id": "services",
            "type": "index",
            "subCategories": [
                {
                    "id": "communication"
                },
                {
                    "id": "public"
                }
            ]
        },
        {
            "id": "trees"
        },
        {
            "id": "parks"
        },
        {
            "id": "places"
        }
    ]
}