{
 "email_type": "cancellation",
 "po_number": "2D-59700334",
 "po_status": null,
 "source_system": "coupa",
 "submitted_by": null,
 "on_behalf_of": null,
 "order_date": null,
 "revision_date": null,
 "last_opened": null,
 "acknowledged_at": null,
 "payment_terms": null,
 "requisition_number": null,
 "department": null,
 "view_order_url": null,
 "supplier": {
  "name": null
 },
 "site_code": null,
 "ship_to": {
  "name": null,
  "address": null,
  "street": null,
  "city": null,
  "state": null,
  "zip": null,
  "location_code": null,
  "attn": null
 },
 "total_amount": null,
 "currency": null,
 "fiscal_year": null,
 "trade": null,
 "coupa_category": null,
 "line_items": [
  {
   "description": null,
   "amount": null,
   "currency": null,
   "need_by": null,
   "category": null,
   "account_code": null,
   "period": null,
   "quantity": null,
   "unit": null,
   "price": null
  }
 ]
}