/**
 * Newsletters::GetNewsletterStatsAsync
 *
 *  Return statistics for newsletters sent to a list
 *
 *  listid      [int, required]: selected list
 *  startdate   [date, optional]: only return stats for newsletters sent on or after this date
 *  enddate     [date, optional]: only return stats for newsletters sent on or before this date
 *  format      [string, optional, default json]: return data format, one of json, xml, csv
 *
 *  notify      [required]
 *      type    [string, required]: one of webhook, email
 *      value   [string, required]: webhook url or email address
 */
{
  "username": "joe",
  "usertoken": "abv",
  "requesttype": "Newsletters",
  "requestmethod": "GetNewsletterStatsAsync",
  "details": {
    "listid": "{*list-id*}",
    "startdate": "{*start date*}",
    "enddate": "{*end date*}",
    "format": "{*format: json|xml|csv*}",
    "notify": {
      "type": "{*type: webhook|email*}",
      "value": "{*webhook url or email address*}"
    }
  }
}