PHP: Genesis add stuff after post

gistfile1

// Add signup incentives after every post
add_action( 'genesis_before_comments', 'zell_post_subscribe_box' );

function zell_post_subscribe_box() {
	if ( is_single() ) {
		echo '<div class="feature-box">';
		echo do_shortcode( '[contact-form-7 id="341" title="Mail Chimp Signup"]' );
		// echo do_shortcode( '[contact-form-7 id="1175" title="Mail Chimp Signup Form WK DRAFT"]' );

		echo '</div><!-- end .feature-box -->';
	}
}