/**
  * Execute the action
  */
 public function execute()
 {
     parent::execute();
     // Get POST parameters
     $userId = \SpoonFilter::getPostValue('userId', null, '');
     // Get count settings
     $this->recentCount = FrontendModel::get('fork.settings')->get('Instagram', 'num_recent_items', 10);
     // Get the images from the Instagram API
     $this->images = FrontendInstagramModel::getRecentMedia($userId, $this->recentCount);
     // Output the result
     $this->output(self::OK, $this->images);
 }