Retrieve customers with rich filtering, sorting, and pagination.

Filter by:

• Customer attributes: customer_name, email, custom_data fields.
• Dates: created_at, updated_at (range filters supported).
• Search: use search parameter for flexible multi-field queries.

Pagination & sorting:

• limit: page size (default varies by configuration).
• cursor: pass 'next' or 'previous' from response to paginate.
• order: field to sort by with - prefix for descending (e.g., -created_at).

Expand:

• expand: comma-separated list of related resources to include (e.g., contacts).