List Subjects for a Registration

Retrieve a list of subjects (taxonomy terms) assigned to a specific registration. Subjects are used to categorize the content of a registration according to a predefined taxonomy. Each subject may be a part of a hierarchical structure, allowing for detailed categorization.

Permissions - Public registrations: No authentication required. - Private registrations: Only contributors with read access can view subjects.

Returns - A JSON object with a data key containing an array of subjects. - Each subject includes metadata such as the subject text and its hierarchical position.