如何从RestRequest对象中查看json

我有RestRequest，我将其格式化为Json，并添加并发送到Serialize，这很好。我只想从restRequest对象中检索生成的json。我怎样才能做到这一点？我在教室里找了找，找不到尸体。

感谢

[DataContract]
public class ToSerialize
{
    [DataMember]
    public string somefield { get; set; }
}

        var request = new RestRequest("/someresource", Method.POST);
        request.RequestFormat = DataFormat.Json;
        var toSerialize = new ToSerialize();
        toSerialize.someField = "hey";
        request.AddBody(toSerialize);
        var response = client.Execute(request);