'entity01' => {
        type => 'text/plain',
        title => 'Foo',
        descr => 'Foo description',
        body  => 'This is Foo...', 
    },
    'entity02' => {
        type => 'application/pdf',
        title => 'EAV Draft',
        descr => 'Serialize complex data structures into binary sequences...',
        body  => $pdf_string,
    },
    'entity03' => {
        type => 'audio/mp3',
        title => 'Perfect Strangers',
        descr => 'Those where the days...',
        artist => 'Deep Purple',
        body => $mp3,
    }