Changes to Add Users to List

post/v1/subscriber_list/{list_id}/subscriber/add/

Aug 20, 20269a5a2cd152ae Revision changes
- breaking
  added the pattern ^[a-z0-9_-]+$ to the path request parameter list_id
Jul 13, 2026e54dd32705e8 Revision changes
- breaking
  api path removed without deprecation
- info
  endpoint added