curl --request POST \
  --url https://your-instance.example.com/api/webhook/mms \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": "<string>",
  "origin": "<string>",
  "from": "<string>",
  "to": "<string>",
  "body": "<string>",
  "media": [
    {
      "url": "<string>",
      "content_type": "<string>",
      "size": 123
    }
  ]
}
'

{}