title: Instagram Invalid Response Error - 400
body: <p>I have the following code.</p>
  
  <pre><code>    params = {'client_id':settings.SOCIAL_AUTH_INSTAGRAM_KEY,
                'client_secret':settings.SOCIAL_AUTH_INSTAGRAM_SECRET,
                'aspect':'media',
                'object':'tag',
                'object_id':instance.hashtag,
                'callback_url':
                    'http://subdomain.domain.net:8000/campaigns/hook'}
      response = requests.post('https://api.instagram.com/v1/subscriptions',
                               data=params)
  </code></pre>
  
  <p>And I get response</p>
  
  <blockquote>
    <p>'{"meta":{"error_type":"APISubscriptionError","code":400,"error_message":"Invalid
    response"}}'</p>
  </blockquote>
  
  <p>My domain is reachable from outside. Any ideas?</p>