{
  "dispositionNotificationTo": "example-string",
  "mdnText": "example-string",
  "needMDN": true,
  "receiptDeliveryUrl": "example-string",
  "sendInboundMDNToMessageBox": true,
  "sendMDNAsynchronously": true,
  "signMDN": true,
  "signOutboundMDNIfOptional": true
}