curl --request POST \
  --url https://your-instance.example.com/api/webhook \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": "<string>",
  "from": "<string>",
  "to": "<string>",
  "body": "<string>",
  "operator_id": "<string>",
  "received_at": "<string>",
  "type": "<string>"
}
'

{}