Change the data presented with Yoast's Enhanced Slack Sharing

functions.php

<?php
// functions.php in a child theme
 
/**
 * Change Enhanced Slack sharing data labels.
 *
 * @param array                  $data         The default Slack labels + data.
 * @param Indexable_Presentation $presentation The indexable presentation object from Yoast.
 *
 * @return array                 $data         The new Slack labels + data.
 */
function mb_slack_enhanced_pages( $data, $presentation ) {
  // $presentation->model->object_id is our $post_id

  if ( is_singular( 'event' ) ) {
      // These are sample post_meta terms you could reference for a CPT
      $date     = get_post_meta( $presentation->model->object_id, 'event_date', true );
      $location = get_post_meta( $presentation->model->object_id, 'event_location', true );
      $data     = [
          'Location' => $location,
          'Date'     => $hours,
      ];
  } elseif ( is_singular( 'product' ) ) {
      // this would be for Woocommerce
      $wcprod = wc_get_product( $presentation->model->object_id );
      $price  = $wcprod->get_price();
      $sku    = $wcprod->get_sku();
      $data   = [
          'Price' => $price,
          'SKU'   => $sku,
      ];
  } elseif ( is_singular( 'page' ) ) {
      $data   = [
          'Who Am I?'        => 'Michael Bourne',
          'What Do I Write?' => 'Cool Shit',
      ];
  }

  return $data;
}
add_filter( 'wpseo_enhanced_slack_data', 'mb_slack_enhanced_pages', 10, 2 );