I like the way that moritz answered. The answer will work great for this specific single question! But I am not sure that the answer will help you in your application.

my @array = ('test', 'demo', 'work');
my $value = 
    {
       'key' => ['value', \@array, 'add'];
    }
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This puts a reference to @array as the 2nd thing in the anon list that 'key' points to. If the contents of @array can vary and in real application, I presume that it will, then,

'key' => ['value', [@array], 'add'];
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The above says that I am going to make copy of @array, and then assign a reference to that in this key structure. That is different than assigning a ref to the @array.