using System;

using System.Linq;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        string json = @"{""Country"":""USA"",""States"":[""Chicago"",""Miami""]}";

​

        string newJson = Remove(json);

​

        Console.WriteLine(newJson);

    }

    public static string Remove(string json)

    {

        var obj = JObject.Parse(json);

        var result = obj["States"].Select(s =>

        {

            var clone = s.Root.DeepClone();

            clone["States"] = new JArray(s);

            return clone;

        });

        return new JArray(result).ToString();

    }

​

}

​

​