themes-wordpress/lettre/patterns/newsletter-in-post.php

<?php
/**
 * Title: In-post newsletter signup
 * Slug: lettre/newsletter-in-post
 * Categories: featured, newsletter
 */
?>

<!-- wp:separator {"color":"tertiary","className":"is-style-wide"} -->
<hr class="wp-block-separator has-text-color has-background has-tertiary-background-color has-tertiary-color is-style-wide"/>
<!-- /wp:separator -->

<!-- wp:spacer {"height":"5px"} -->
<div style="height:5px" aria-hidden="true" class="wp-block-spacer"></div>
<!-- /wp:spacer -->
<!-- wp:paragraph {"align":"center","fontSize":"small"} -->
<p class="has-text-align-center has-small-font-size"><?php echo esc_html__( 'Subscribe for more posts like this', 'lettre' ); ?></p>
<!-- /wp:paragraph -->

<!-- wp:jetpack/subscriptions {"buttonBackgroundColor":"primary","textColor":"secondary","borderRadius":50,"borderColor":"primary","className":"is-style-compact"} /-->

<!-- wp:spacer {"height":"5px"} -->
<div style="height:5px" aria-hidden="true" class="wp-block-spacer"></div>
<!-- /wp:spacer -->
<!-- wp:separator {"color":"tertiary","className":"is-style-wide"} -->
<hr class="wp-block-separator has-text-color has-background has-tertiary-background-color has-tertiary-color is-style-wide"/>
<!-- /wp:separator -->