{
  "categories": [
    {
      "code": "01",
      "name": "Sci-Fi",
      "books": [
        {
          "title": "A Sci-Fi book",
          "lang": "English",
          "authors": [
            "Joe & Rahul"
          ],
          "pub_year": "2001",
          "price": "1000"
        }
      ]
    },
    {
      "code": "02",
      "name": "Horror",
      "books": [
        {
          "title": "A Horror book",
          "lang": "English",
          "authors": [
            "Joe & Rahul"
          ],
          "pub_year": "2003",
          "price": "2000"
        }
      ]
    }
  ]
}