using System;

using System.Collections.Generic;

using Newtonsoft.Json;

using System.Dynamic;

using Newtonsoft.Json.Converters;

public class Program

{

    public static void Main()

    {

        var json = "{\"@odata.context\":\"https://wtw-cft-uk-s-iat-user-management-service-api-app.azurewebsites.net/Users/$metadata#Active\",\"value\":[{\"principalId\":\"f975d283-d3f6-42e1-8c8f-1f5bdb8eaffd\",\"displayName\":\"Ronak Kadia\",\"upn\":\"ronak.kadia@willistowerswatson.com\",\"emailAddress\":\"ronak.kadia@wtwco.com\",\"lastModified\":\"2021-08-13T12:10:05.14Z\",\"isInternal\":true}]}";

        dynamic config = JsonConvert.DeserializeObject<ExpandoObject>(json, new ExpandoObjectConverter());

        Console.Write(config.value[0].emailAddress);

    }

}