I have a text with a image that I put with the WYSIWYG editor. When It goes to preview the imagem is shown perfectly but when I consume the API, I get just a text with the link inside it, and it is show broken like that
 Coloquei uma foto diferente só pra testar como funciona colocar fotos aleatóriamente no meio do texto =)
The WYSIWYG return content in markdown format.
See here https://guides.github.com/features/mastering-markdown/
If you want to insert it in your application, you will have to use a convertor from makdown to html for example.