title: Showing alerts when Meteor user is updated
body: <p>I am working on a Meteor application. Occasionally, the server updates the current user with data from an external database. When that happens, I would like to display an alert on whatever page of the application is open on client side. I know the Meteor.user gets updated automatically on the client, but I am clueless as to how and where to get the application to monitor the user for changes and react to them. Any ideas on this?</p>
  
  <p>The user update is triggered via a post to the server:</p>
  
  <pre><code>Router.map(function() {
  this.route('/reload_user', {where: 'server'}).post(function() {
      var data = this.request.body;
      var user = Meteor.users.findOne({ "profile.id": data.id });
  
      var data = Account.getAccountInfo(apiKey, secretKey);           
      Meteor.users.update(user._id, {
          $set: {
              "profile.paywall": data.paywall,
          }
      });
      this.response.end();
  });
  </code></pre>