Response: 200 OK, application/json
{
  "id" : 70,
  "addr" : "183qrMGHzMstARRh2rVoRepAd919sGgMHb",
  "op" : "RECEIVE",
  "confs" : 5,
  "callback" : "https://mystore.com?invoice_id=123",
  "onNotification" : "KEEP"
}