{
  "@context": {
    "id": "@id",
    "type": "@type",
    "notify": "http://www.w3.org/ns/solid/notifications#",
    "WebSocketSubscription2021": "notify:WebSocketSubscription2021",
    "features": {
      "@id": "notify:features",
      "@type": "@id"
    },
    "notificationChannel": {
      "@id": "notify:notificationChannel",
      "@type": "@id"
    },
    "state": "notify:state",
    "subscription": {
      "@id": "notify:subscription",
      "@type": "@id"
    }
  }
}