List all complex orders with optional filters.
Returns a paginated list of complex orders (conditional, TWAP, etc.) across all
accessible subaccounts, ordered by created_at descending.
Filters:
All filters are optional and can be combined. Use complex_order_type to narrow
to a specific type. If no subaccount_id is specified, returns orders from all
subaccounts the user has access to.
API key for programmatic access. Generate one at app.rivermarkets.com under Settings → API Keys.
PENDING, ACTIVE, TRIGGERED, CANCELLED 1 <= x <= 1000x >= 0