Notification Bundle with payload: id-only, including a referenced Patient

{
  "resourceType" : "Bundle",
  "id" : "920a46b7-045a-4773-82bd-8e90c3e15653",
  "type" : "subscription-notification",
  "timestamp" : "2020-04-17T10:24:13.1882432-05:00",
  "entry" : [{
    "fullUrl" : "urn:uuid:dae6bdbc-71ab-4043-b11e-59b52bda60ad",
    "resource" : {
      "resourceType" : "SubscriptionStatus",
      "id" : "dae6bdbc-71ab-4043-b11e-59b52bda60ad",
      "text" : {
        "status" : "generated",
        "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: SubscriptionStatus</b><a name=\"dae6bdbc-71ab-4043-b11e-59b52bda60ad\"> </a></p><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Resource SubscriptionStatus &quot;dae6bdbc-71ab-4043-b11e-59b52bda60ad&quot; </p></div><p><b>status</b>: active</p><p><b>type</b>: event-notification</p><p><b>eventsSinceSubscriptionStart</b>: 2</p><h3>NotificationEvents</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>EventNumber</b></td><td><b>Focus</b></td><td><b>AdditionalContext</b></td></tr><tr><td style=\"display: none\">*</td><td>2</td><td><a href=\"broken-link.html\">http://example.org/FHIR/R5/Encounter/2</a></td><td><a href=\"broken-link.html\">http://example.org/FHIR/R5/Patient/ABC</a></td></tr></table><p><b>subscription</b>: <a href=\"broken-link.html\">http://example.org/FHIR/R5/Subscription/123</a></p><p><b>topic</b>: <a href=\"http://example.org/FHIR/R5/SubscriptionTopic/admission\">http://example.org/FHIR/R5/SubscriptionTopic/admission</a></p></div>"
      },
      "status" : "active",
      "type" : "event-notification",
      "eventsSinceSubscriptionStart" : "2",
      "notificationEvent" : [{
        "eventNumber" : "2",
        "focus" : {
          "reference" : "http://example.org/FHIR/R5/Encounter/2"
        },
        "additionalContext" : [{
          "reference" : "http://example.org/FHIR/R5/Patient/ABC"
        }]
      }],
      "subscription" : {
        "reference" : "http://example.org/FHIR/R5/Subscription/123"
      },
      "topic" : "http://example.org/FHIR/R5/SubscriptionTopic/admission"
    }
  },
  {
    "fullUrl" : "http://example.org/FHIR/R5/Encounter/2",
    "request" : {
      "method" : "PUT",
      "url" : "Encounter/2"
    },
    "response" : {
      "status" : "201"
    }
  },
  {
    "fullUrl" : "http://example.org/FHIR/R5/Patient/ABC",
    "request" : {
      "method" : "GET",
      "url" : "Patient/ABC"
    },
    "response" : {
      "status" : "200"
    }
  }]
}