Root Type for Webhook-Image

{
    "caption": "Check out my new phone!",
    "file": "/usr/local/wamedia/shared/b1cf38-8734-4ad3-b4a1-ef0c10d0d683",
    "id": "b1c68f38-8734-4ad3-b4a1-ef0c10d683",
    "mime_type": "image/jpeg",
    "sha256": "29ed500fa64eb55fc19dc4124acb300e5dcc54a0f822a301ae99944db"
}