[EnableCors(origins: "*", headers: "*", methods: "*")]
public class SampleController : ApiController
{
    [Authorize]
    [HttpGet]
    public string GetAuthorizeEmployee()
    {
        return new Employee()
            {
                EID = "EMP_1001",
                User = "Ram@gmail.com",
                Name = "Ram Kumar",
                Mobile_Number = "9999911111"
            };
    }
}

public class Employee
{
    public string EID { get; set; }
    public string User { get; set; }
    public string Name { get; set; }
    public string Mobile_Number { get; set; }
}

{
    "eID": "EMP_1001",
    "user": "EMP_1001",
    "name": "EMP_1001",
    "mobile_Number": "EMP_1001"
}

{
    "EID": "EMP_1001",
    "User": "EMP_1001",
    "Name": "EMP_1001",
    "Mobile_Number": "EMP_1001"
}