Hi Team,
I have created valid JSON and using Rest Api "rest/api/content" to create content as markdown in confluence.
If i hit Api i get HTTP 200 and Json got pasted on confluence page as plane html text though my repesrentation is "representation":"wiki"

{"type":"page","title":"Release Notes-TestA2","ancestors":[{"id":121212}],"body":{"wiki":{"value":"Text"}},"space":{"key":"test"}}
If i see this in Markdown in interface and paste the same html then i see proper table formating with the content.
