Adding a relevant content block in code

myupdate.install

/**
 * Update 6014: Set relevant content blocks active
 */
function ff_update_6014() {
  $rc = array(
    'video_nodes' => array(
      'types' => array('video' => 'video'),
      'vocabs' => array(
        '1' => '1',
        'limit' => 5,
        'header_text' => '',
        'token_settings' => '',
      )
    )
  );
  variable_set('relevant_content', $rc);
  return array();
}