how to get the value from Deserialized data

Question

HI, i am trying to retrieve data from API but i am unable to get the data(billFetchId, context), i have metioned Data formate below as well tried code with output.(screenshot inside zip file)

 

//Api data //

"data": {

"billFetchId": "hUQhddsk5UpaFL",

"context": "eyJjdXN0b2dsafdsafdsfdsafiAiTG9hbiBOdW1iZXIiLCAidsfsdafxGZXRjaElkIjogImhVUWhkU0xGazVdsf"

},

"statusCode": "success",

"statusMessage": "API is successful"

//Tried code//
var billerserializes = new System.Web.Script.Serialization.JavaScriptSerializer();
var billerdata = billerserializes.Serialize(billfetchrequest);
var billerresponse = webClient.UploadString(url, billerdata);
BillFetchRequest2 billfetchrequest2 = new BillFetchRequest2();
billfetchrequest2 = billerserializes.Deserialize<BillFetchRequest2>(billerresponse);
public class BillFetchRequest2
{
    public object data { get; set; }
}