db.json

{
    "category": [
        {
            "name": "By genre",
            "children": [
                {
                    "name": "Adventure"
                },
                {
                    "name": "Action"
                },
                {
                    "name": "Kids"
                },
                {
                    "name": "Documentary"
                }
            ]
        },
        {
            "name": "By name",
            "children": [
                {
                    "name": "Abc"
                },
                {
                    "name": "Hbo"
                },
                {
                    "name": "Tf1"
                }
            ]
        }
    ]
}