get https://api.ottolearn.io/v1/rest/masteryProfile()/contents()
Get the specific content of a Mastery Profile. This API call will return a single content object for a valid Mastery Profile ID and Content ID. Mastery Profile ID's can be found by using the List all Mastery Profiles (/masteryProfile) API call. Content ID's can be found by using the List contents of a specific Mastery Profile (/masteryProfile(id)/contents) API call.