How to switch normalizer to legacy?

Hi,

I have User one to many Order entities and my query has proper join which returns list of users with nested array of all his orders. I saw that when I change kitpages_data_grid.item_list_normalizer.standard to kitpages_data_grid.item_list_normalizer.legacy in kitpages_data_grid.grid_manager service its returning what I want. My question is how can I change this normalizer?