Mirador OA tweaks (within + service)

{
  "@context": "http://iiif.io/api/presentation/2/context.json",
  "@type": "oa:Annotation",
  "motivation": [
    "oa:commenting"
  ],
  "resource": [
    {
      "@type": "dctypes:Text",
      "format": "text/html",
      "chars": "<p>test</p>"
    }
  ],
  "on": {
    "@type": "oa:SpecificResource",
    "full": "https://data.ucd.ie/api/img/ucdlib:40851/canvas/ucdlib:42220",
    "selector": {
      "@type": "oa:SvgSelector",
      "value": "<svg xmlns='http://www.w3.org/2000/svg'><path xmlns=\"http://www.w3.org/2000/svg\" d=\"M7649.65919,1407.19635l930.36396,0l0,0l930.36396,0l0,648.43548l0,648.43548l-930.36396,0l-930.36396,0l0,-648.43548z\" data-paper-data=\"{&quot;rotation&quot;:0,&quot;annotation&quot;:null}\" id=\"rectangle_37a0849a-557a-4bc8-a9b3-937bacb58b69\" fill-opacity=\"0\" fill=\"#00bfff\" fill-rule=\"nonzero\" stroke=\"#00bfff\" stroke-width=\"18.79523\" stroke-linecap=\"butt\" stroke-linejoin=\"miter\" stroke-miterlimit=\"10\" stroke-dasharray=\"\" stroke-dashoffset=\"0\" font-family=\"sans-serif\" font-weight=\"normal\" font-size=\"12\" text-anchor=\"start\" style=\"mix-blend-mode: normal\"/></svg>"
    },
    "within": {
      "@id": "https://data.ucd.ie/api/img/manifests/ucdlib:40851",
      "@type": "sc:Manifest",
      "label": "City of Dublin"
    }
  },
  "service": {
    "@id": "https://iiif.ucd.ie/loris/ucdlib%3A42220",
    "@context": "http://iiif.io/api/image/2/context.json",
    "profile": "http://iiif.io/api/image/2/level2.json"
  }
}