How to include nested List in asp.net api response

I’m working with a nested list (List inside List) everything is working fine but when I try to get response from Api (GetOrders) it is not showing lists. I try to .include(x=>x.ShopOrdersList) but It is only including “ShopOrdersList” and the second list “OrderSummaries” which is inside “ShopOrdersList” is not showing.
My model is follow