Deserialize Json response using JavaScriptSerializer() in Asp.net MVC

   Step- 1
   using System.Web.Script.Serialization;   // include this namespace   
  
  Step- 2

 IRestResponse<List<string>> response = APIRequest.DoPostRequestPOPServices(inputParameters, HeaderKey, Token,  baseUrl, requestMethod);    //API calling for data

  JavaScriptSerializer serializer = new JavaScriptSerializer();   // create obj of javascript serializer 
   if (response.Data != null)
    {
         ResponseClass objResponse = new ResponseClass();  //create ob of response class 
         objResponse = serializer.Deserialize<ResponseClass>(response.Data[0]);   /// deserialize the json data
//now your data is inside ResponseClass obj
        string  ResCode = objResponse.ResCode;   //get value from obj
        string Message = objResponse.ResMsg;    //get value from obj
    }