Problem Statement
In the newer versions like 1.5, it is not possible to send POST requests with Headers and Body.
In my use-case there is no other way to retrieve information of a AdaptiveCard send via Outlook.
The documentation says to use Action.Execute but there are no parameters to allow URL, Header and Body.
Proposed solution
Include a HTTP-Request as a Action or (like the documentation says) enable us to use Action.Execute as a HTTP-Request aswell.
Alternatives or Workarounds
Use 1.0 or 1.1 with Action.HTTP, still works for Outlook Actionable Messages.