POST/v1/files/:file_key/comments: Missing required parameter message_meta


When I call REST API with token from OAuth I got
{"error":true,"status":400,"message":"Missing required parameter message_meta","i18n":null}

but it works with the same parameters if I try on the site, with API token Figma

What’s needed to make it work with OAuth token? what’s message_meta? there’s no such parameters in documentation

turned out it was Content-Type: application/json missing