public boolean removeSubFromUser(
      BasicUser user, com.ccc.oauth.apimanagement.model.Service service) {
    List<Subscribed> subs = servicesForUser(user);

    for (Subscribed sub : subs) {
      if (sub.getService().equals(service)) return subscribedManager.deleteE(sub);
    }

    return false;
  }
 public boolean subscribeUser(BasicUser user, com.ccc.oauth.apimanagement.model.Service service) {
   Subscribed sub = new Subscribed();
   sub.setService(service);
   sub.setUserName(user.getUsername());
   return subscribedManager.saveE(sub);
 }