title: Bot Framework Slack Message Reaction Not Received
body: <p>I'm using the Bot Framework v4 based on the Enterprise Bot Template (found here: <a href="https://docs.microsoft.com/en-us/azure/bot-service/bot-builder-enterprise-template-overview?view=azure-bot-service-4.0" rel="nofollow noreferrer">https://docs.microsoft.com/en-us/azure/bot-service/bot-builder-enterprise-template-overview?view=azure-bot-service-4.0</a>) as a base for my chatbot. The bot is hosted on Azure with all the required services.</p>
  
  <p>I have connected it to a Slack app and everything is working.
  I have registered for "reaction_added" event in the "Event Subscriptions" within Slack.</p>
  
  <p>What I'm trying to do is to detect and act on a Slack message reaction (e.g. thumbsup on a message) from within the chatbot code but I'm not getting a message for any reaction from the user.</p>
  
  <p>The OnTurnAsync doesn't seem to get any call or activity for such events.</p>
  
  <p>Does anyone know what's going on or how to receive these events?</p>
  
  <p>Thanks.</p>