How to add Google Analytics 4 code for AMP pages?

I’m in the process of setting up Google Analytics 4, but I have no idea how to add code as a function for AMP pages.

Currently using this in the functions.php to monitor Analytics legacy:

add_action( 'amp_post_template_footer', 'xyz_amp_add_analytics' );
function xyz_amp_add_analytics( $amp_template ) {
    $post_id = $amp_template->get( 'post_id' );
    ?>
	<amp-analytics type="googleanalytics" id="analytics1">
	<script type="application/json">
	{
	  "vars": {
		"account": "UA-111111111-11"
	  },
	  "triggers": {
		"trackPageview": {
		  "on": "visible",
		  "request": "pageview"
		}
	  }
	}
	</script>
	</amp-analytics>
    <?php
}

Does anyone know the code to track Analytics 4?