{
    "_id": "att",
    "_rev": "1-xxx",
    "_attachments": {
        "foo.txt": {
            "content_type": "text/plain",
            "revpos": 1,
            "data": "VGVzdCBmaWxlCg==",
            "length": 10,
            "digest": "md5-cff5tj+J3vS8OVU4L55cEw=="
        }
    },
    "_revisions": {
        "start": 1,
        "ids": [
            "xxx"
        ]
    }
}