post https://buzz-key.api.beeswax.com/rest/html_asset
About HTML Assets
The HTML Asset object is used to upload HTML5 creatives. Currently, only single files are supported. The file uploaded must be valid HTML and any macros must be valid. Dynamic macros are not currently supported for HTML5 creatives. Note, if the creative does not include the CLICK_URL macro the creative will not track clicks and will not be eligible to serve on Google AdX.