gistfile1.txt

  $url = 'https://login.libsyn.com';
  $args = array(
    'headers' => array(
      array( 'Content-Type' => 'application/x-www-form-urlencoded;charset=UTF-8' ),
    ),
        'body' => array(
          'req' => 'https://four.libsyn.com/stats/ajax-export/show_id/' . $showID . '/type/downloads/target/show/id/' . $showID . '/',
          'email' => $email,
          'password' => $password
      ),
  );
  $response = wp_remote_post( $url, $args );