#!/usr/bin/perl
use strict;
use warnings;
use 5.012;
use Data::Dumper;

my %data;
{
	local $/ = 'object-group';
	while (<DATA>) {
		chomp;
		next unless $_;
		my ($type, $key) = /\A (\S+) (\S+)$/m;
		my @data = /^ $type-object (.+)$/mg;
		$data{ $key } = {type => $type, array_of_entries => \@data};
	}
}
print Dumper \%data;

__DATA__
object-group service DM_SERVICE_7
 service-object tcp eq 1433 
 service-object tcp eq 49160 
 service-object tcp eq 8086 
object-group network Employees
 description Employees
 network-object 10.10.12.0 255.255.255.0
 network-object 10.11.12.0 255.255.255.0