Returns a paginated list of all contacts segments defined in your app.
Segments are ordered by ID descending (most recently created first).

Pagination

This endpoint uses cursor-based pagination:

• per_page: Number of segments per page (default: 20, max: 100)
• cursor: The segment_id from the last item of the previous page

Flow:

1. First request: GET /segments/contacts?per_page=20
2. Read cursor from response
3. Next page: GET /segments/contacts?per_page=20&cursor=<cursor>
4. Continue until cursor is null