{
    "source": {
        "type": "file",
        "location": "sample-newsletter.pdf",
        "filename": "sample-newsletter.pdf"
    },
    "metadata": {
        "Producer": "Prince 20170522 (www.princexml.com)",
        "Pages": 3
    },
    "references": {
        "url": [
            "http://www.princexml.com/",
            "http://navngen.no/",
            "http://www.drylab.no/",
            "http://www.imdb.com/title/tt1504320/",
            "http://www.imdb.com/name/nm0003432/"
        ]
    }
}