themes-wordpress/snd/patterns/subscribe.php

<?php

/**
 * Title: Subscribe
 * Slug: snd/subscribe
 * Categories: featured
 * Inserter: yes
 */
?>

<!-- wp:group {"style":{"spacing":{"blockGap":"var:preset|spacing|40"}},"layout":{"type":"constrained"}} -->
<div class="wp-block-group"><!-- wp:separator {"style":{"color":{"background":"#ffffff26"}}} -->
<hr class="wp-block-separator has-text-color has-alpha-channel-opacity has-background" style="background-color:#ffffff26;color:#ffffff26"/>
<!-- /wp:separator -->

<!-- wp:heading {"level":3,"fontSize":"medium"} -->
<h3 class="wp-block-heading has-medium-font-size"><?php echo esc_html__( 'Subscribe to my newsletter', 'snd' ); ?></h3>
<!-- /wp:heading -->

<!-- wp:jetpack/subscriptions {"submitButtonText":"SUBSCRIBE","borderRadius":50} /--></div>
<!-- /wp:group -->