How to get courses in a category and any subcategories with courses

Using curl and jq, I can fetch course id and fullname from a category, like this:

curl "https://domain/webservice/rest/server.php?wstoken=token_string_here&wsfunction=core_course_get_courses_by_field&moodlewsrestformat=json&field="category"&value="category_id_here"" | jq -r '.courses[] | "\(.id) \(.fullname)"'

However, I would to include any subcategories below the chosen category_id and get those courses as well, i.e.

-- (starting category) -- any courses in starting category + subcategory1 with its courses + subcategory2 with its courses etc.

Is this possible directly with the APIs in Moodle 3.5.x by changing the command line above?