my %hash = (
             '103496-1'  => [{ 'CLVD' => '5678', 'COMP' => '1234', 'FD' => '0010', 'Files' => [{'File' => 'text.txt', 'hash' => 'a538346ad3485'},{'File' => 'text2.txt', 'hash' => '237d97892376a'}] }]
           );


##</code><code>##

my %newhash = (
             '103496-1'  => [{ 1234 => {'CLVD' => '5678', 'FD' => '0010', 'Files' => [{'File' => 'text.txt', 'hash' => 'a538346ad3485'},{'File' => 'text2.txt', 'hash' => '237d97892376a'}] }]
           );