def track_enrollment(pathway, user_id, course_run_id, url_path=None):
track_event(user_id, '<STR_LIT>', {<EOL>'<STR_LIT>': pathway,<EOL>'<STR_LIT>': url_path,<EOL>'<STR_LIT>': course_run_id,<EOL>})<EOL>
Emit a track event for enterprise course enrollment.