The topic on the extortion could be manipulated into or voluntarily solicit the use of prostitution that is then later used to extort revenue or for profit or else. The film The Godfather Aspect II famously depicts the job of Senator Geary who is implicated in the use of prostitution https://bookmarkspy.com/story2006507/helping-the-others-realize-the-advantages-of-call-girl-names-in-facebook