title: Using Webhooks with Rails
body: <p>I am unfamiliar with Webhooks but I feel like they are the right thing for my app.</p>
  
  <p>I have the following documentation for <a href="http://docs.fluidsurveys.com/fluidsurveys/api/webhooks.html" rel="noreferrer">FluidSurveys webhook</a></p>
  
  <p>I understand how I can make the webhook through a <code>POST</code> request to their <code>API</code>, but I don't know how can I tell where the webhook is actually going to send the response.
  Can I pass any subscription url I want? e.g. <code>https://www.myapp.com/test</code> and is that where <code>webhook</code> will send the data? Also, after the <code>webhook</code> is created I'm not sure how to ensure my Rails app will receive the response that is initiated.
  I assume a controller method that corresponds with the url I provide to the webhook.</p>
  
  <p>If I'm correct on the controller handling the webhook, what would that look like?</p>
  
  <p>Any guidance is appreciated.</p>