Heartbeat Bundle (ping channel with no event)

@prefix fhir: <http://hl7.org/fhir/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

# - resource -------------------------------------------------------------------

[a fhir:Bundle ;
  fhir:nodeRole fhir:treeRoot ;
  fhir:id [ fhir:v "3d20ea4b-90dc-4d0d-b15a-c7a893389401"] ; # 
  fhir:type [ fhir:v "subscription-notification"] ; # 
  fhir:timestamp [ fhir:v "2020-04-17T10:24:13.1882432-05:00"^^xsd:dateTime] ; # 
  fhir:entry ( [
     fhir:fullUrl [ fhir:v "urn:uuid:a5b053d4-2603-446f-ae86-f5853ac09334"^^xsd:anyURI ] ;
     fhir:resource ( <urn:uuid:a5b053d4-2603-446f-ae86-f5853ac09334> )
  ] )] . # 

<urn:uuid:a5b053d4-2603-446f-ae86-f5853ac09334> a fhir:SubscriptionStatus ;
  fhir:id [ fhir:v "a5b053d4-2603-446f-ae86-f5853ac09334"] ; # 
  fhir:text [
     fhir:status [ fhir:v "generated" ] ;
     fhir:div "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: SubscriptionStatus</b><a name=\"a5b053d4-2603-446f-ae86-f5853ac09334\"> </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;a5b053d4-2603-446f-ae86-f5853ac09334&quot; </p></div><p><b>status</b>: active</p><p><b>type</b>: heartbeat</p><p><b>eventsSinceSubscriptionStart</b>: 310</p><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>"
  ] ; # 
  fhir:status [ fhir:v "active"] ; # 
  fhir:type [ fhir:v "heartbeat"] ; # 
  fhir:eventsSinceSubscriptionStart [ fhir:v "310"^^xsd:long] ; # 
  fhir:subscription [
     fhir:link <http://example.org/FHIR/R5/Subscription/123> ;
     fhir:reference [ fhir:v "http://example.org/FHIR/R5/Subscription/123" ]
  ] ; # 
  fhir:topic [
     fhir:v "http://example.org/FHIR/R5/SubscriptionTopic/admission"^^xsd:anyURI ;
     fhir:link <http://example.org/FHIR/R5/SubscriptionTopic/admission>
  ] . # 

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