public class EmployeeData
{
public int EmpDeptId { get; set; }
}
public class Employee
{
public int ID { get; set; }
public string Name { get; set; }
public string Address { get; set; }
public EmployeeData Data { get; set; }
}
Untested, but something like the above, you create a "Data" property that is of a type that supports the data structure.