Supertone이 제공하는 모든 사용 가능한 보이스 목록을 가져옵니다.
Number of items per page (default: 20, min: 10, max: 100)
Token for pagination (obtained from the previous page's response)
Paginated available voices response with next page token
List of character items
Total number of available characters (might be approximate or removed in future)
150
Token for fetching the next page of results. Undefined if no more pages.
"some_opaque_token_string_representing_last_id"