❔ Assign JSON API Results To DTO

public class TestDTO
{
   public Data data { get; set; }
}
public class Data
{
   public string fname { get; set; }
   public string lname { get; set; }
   public string phonenNumber { get; set; }
}

TestDTO td = null;

//code here

td = new TestDTO
{
    //how do I get to fname here?
};