av_postcontent shortcode provides non parsed shortcodes of layout builder

Hi guys,
following scenario: I want to show content of a page in a template file.
So I build a page with the advanced layout builder and would like to display it’s content above the footer Problem is:
If I use the do_shortcode function inside my functions.php like this:

echo do_shortcode('[av_postcontent link="page,145" av_uid=""]');
the result is unparsed shortcodes from the layout builder:
[av_heading heading='Provisionsvertrag abschließen und Testgeräte bestellen' tag='h2' style='blockquote modern-quote' size='' subheading_active='' subheading_size='15' margin='' margin_sync='true' padding='10' color='' custom_font='' av-medium-font-size-title='' av-small-font-size-title='' av-mini-font-size-title='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' av_uid='av-jkcdbpny' admin_preview_bg=''][/av_heading] [av_textblock size='' font_color='' color='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' av_uid='av-jkcdca70' admin_preview_bg=''] Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. [/av_textblock] [av_textblock size='' font_color='' color='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' av_uid='av-jkcdc08d' admin_preview_bg=''] [gravityform id="1" title="true" description="true"] [/av_textblock]

Is thhere an option to filter this code or parse it with the alb functions?

thanks for any advice Sascha