curl --request POST \
  --url https://api.open.cx/salesforce/miaw/webhook \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "event": "message:new",
  "session_id": "<string>"
}
'

{
  "success": true,
  "message": "<string>"
}