lib/utils/userStats.js/identify
function identify(payload) {
  const TRACKING_IS_DISABLED = isTrackingDisabled();
  const data = payload || {};

  if (TRACKING_IS_DISABLED && !data.force) {
    if (DEBUG) {
      console.log('abort .identify call');
    }
    // exit early is tracking disabled
    return BbPromise.resolve();
  }
  delete data.force;
  if (DEBUG) {
    console.log('.identify call', data);
    return BbPromise.resolve();
  }
  return request(IDENTIFY_URL, data);
}