/**
 * Webhook::GetWebhooks
 *
 *  Return a list of webhooks for a user.
 *
 *  events   [array of open|click|bounce|unsubsribe|complaint, optional]: event types
 *  verified [bool, optional]: fetch only webhooks with verified urls
 *  failed   [bool, optional]: fetch only webhooks with failed urls
 *  enabled  [bool, optional]: fetch only enabled webhooks
 */
{
  "username": "matbt@pinpointe.com",
  "usertoken": "XXX",
  "requesttype": "Webhook",
  "requestmethod": "GetWebhooks",
  "details": {
    "events": "{*event_type*}", "{*event_type*}", ...]
    "verified": "{*bool*}",
    "failed": "{*bool*}",
    "enabled": "{*bool*}"
  }
}