How to retrieve request body from Integration?

Hi Team,

I have an integration with Drupal. We send the outcomes from Appian to Drupal. I wanted to retrieve the request body (we are sending a json body) which is sent to Drupal. Is there any way to extract the same? There is some issue with the json that is being sent over to Drupal which we cannot figure out. Any help would be appreciated.

Kindly revert back if you need any more information. 

Thank you! 

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