{
  "resourceType": "Observation",
  "status": "final",
  "code": {
    "coding": [
      {
        "system": "https://kotidigi.fi/fhir/codesystem/SleepAndActivityNotification",
        "code": "weak-circadian-rhythm",
        "display": "Weak Circadian Rhythm"
      }
    ],
    "text": "Weak Circadian Rhythm"
  },
  "subject": {
    "identifier": {
      "system": "https://{environment}.kotidigi.fi/identifier/person",
      "value": "123e4567-e89b-12d3-a456-426614174000"
    }
  },
  "device": {
    "extension": [
      {
        "url": "DeviceVersion",
        "valueString": "Vivago"
      }
    ]
  },
  "effectiveDateTime": "2023-05-10T10:30:00Z",
  "valueString": "The user's recent circadian rhythm shows a declining trend."
}