{
  "systems" : [
    {
      "system" : "http://example.org/some-id-type-system",
      "authoritative" : [],
      "candidates" : []
    },
    {
      "system" : "http://example.org/some-system",
      "authoritative" : [],
      "candidates" : []
    },
    {
      "system" : "http://loinc.org",
      "authoritative" : [],
      "candidates" : ["http://tx.fhir.org/r4", "https://tx.ontoserver.csiro.au/fhir"]
    },
    {
      "system" : "http://not-a-known-code-system",
      "authoritative" : [],
      "candidates" : []
    },
    {
      "system" : "http://not-a-known-code-system|2.36",
      "authoritative" : [],
      "candidates" : []
    },
    {
      "system" : "http://terminology.hl7.org/CodeSystem/definition-use",
      "authoritative" : ["http://tx.fhir.org/r4"],
      "candidates" : ["https://tx.ontoserver.csiro.au/fhir"]
    },
    {
      "system" : "http://unitsofmeasure.org",
      "authoritative" : [],
      "candidates" : ["http://tx.fhir.org/r4", "https://tx.ontoserver.csiro.au/fhir"]
    },
    {
      "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "authoritative" : [],
      "candidates" : ["http://tx.fhir.org/r4"]
    },
    {
      "system" : "urn:ietf:bcp:13",
      "authoritative" : [],
      "candidates" : ["http://tx.fhir.org/r4"]
    }
  ]
}