Atualizar chave aninhada com campo json postgres no Rails

update moves 
set data = jsonb_set(
    data::jsonb,
    array['boxes'],
    (data->'boxes')::jsonb - 'book' || jsonb_build_object('book_new', data->'boxes'->'book')
    )
where data ->> 'boxes' like '%book%'
returning *;

                         data                         
------------------------------------------------------
 {"boxes": {"moving": 2, "book_new": 2}, "goods": {}}
(1 row)