During January 2026, André Gouveia developed the Subscription Groups feature for the segmentio/action-destinations repository, focusing on Braze integration. He introduced a new subscription_groups field to manage user subscription status within groups, updating both updateUserProfile and updateUserProfile2 actions with revised type definitions, schemas, and utility functions. Using TypeScript and full stack development skills, André enhanced the UI by setting the default object interface to keyvalue, improving data manageability. He implemented comprehensive tests covering single, multiple, and batched scenarios, including edge cases, and added defensive handling for subgroups, resulting in more robust segmentation and improved data quality for marketing automation.