// ...
public System.Web.Http.IHttpActionResult Register(string id,
string notificationType)
{
User user = userService.LoadUser(id);
userService.RegisterForNotifications(user,
NotificationType.FromString(notificationType));
return(Ok());
}
public void Unregister(string userId, string notificationType)
{
User user = userService.LoadUser(userId);
userService.UnregisterForNotifications(user, NotificationType.FromString(notificationType));
}