title: How to send hidden link from bot
body: <p>I need to redirect user. User sends message: "show me my profile", bot sends hidden link and redirect him to profile page.</p>
  
  <p>Now I'm doing it with backchannel:</p>
  
  <pre><code>botConnection.activity$
      .subscribe(activity =&gt; redirect(activity.value))
  </code></pre>
  
  <p>But that means, that user can see message with link from bot and only after that user will be redirected. How can I hide this message from user?</p>