title: azure logic apps, get the key of a json response
body: <p>I have a logic apps that sends a request and expect a response. the response has an important value, but it comes as a key, and I need to store it in a variable. how can I get this key and store as a value.</p>
  
  <p>eg: <code>{"subscriptions": {"ABC": "true"}}</code> -> I need to get <code>"ABC"</code> and store it in a variable, something like -><code>initialize variable -&gt; var_abc="ABC"</code></p>