{
       "fruits":[
          "apple",
          "orange",
          "grapes",
          "banana"
       ],
       "animals":[
          "cat",
          "dog",
          "lion",
          "bird",
          "horse"
       ],
     "numbers":[
          "1",
          "2",
          "3",
          "4",
          "5"
       ]
    }

public class RootObject
{
    public List<string> fruits { get; set; }
    public List<string> animals { get; set; }
    public List<string> numbers { get; set; }
}

public List<string> colors{ get; set; }