title: How to add JSON from "Body" in the query parameter?
body: <p>I'm trying to send a message to an SQS queue. I have everything setup correctly.
  I'm using a fifo queue, so my post string looks like this:</p>
  <pre><code>https://queuename?Action=SendMessage&amp;MessageBody=TEST&amp;MessageGroupId=6&amp;MessageDeduplicationId=6
  </code></pre>
  <p>The above works and the body of the message is TEST, However, I'd like to send data in JSON format
  In the body tab, I have my payload formatted in JSON. How do I get that JSON value into the MessageBody field as a variable?</p>