(%{$one},%{two}) = 
        (
            data => { ( %{ $data{data} }, %{ $one->{data} // {} } ) },
            total => do
            {
                my %total;
                for my $href ( $one->{total}, $data{total} ) {
                    $total{$_} += $href->{$_} for keys %{ $href };
                }
            \%total;
            }
        );