> For the complete documentation index, see [llms.txt](https://docs.geopard.tech/geopard-tutorials/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.geopard.tech/geopard-tutorials/de/api-dokumentation/geopard-api-anfragenubersicht/1.-abonnement-ereignisse-abrufen.md).

# 1. Abonnement: Ereignisse abrufen

Folge Abonnements wenn `EINFÜGEN`/`ÄNDERN`/`ENTFERNEN` Aktionen mit "Farm", "Feld", "FieldSatelliteImage", "RasterAnalysisMap", "VectorAnalysisMap" und anderen Entitäten stattfinden.

Der Abonnementmechanismus basiert auf MQTT und WebSocket. Unsere Empfehlung ist, die Integration zu beginnen, indem Sie die [AWS AppSync Subscription Artikel](https://docs.aws.amazon.com/appsync/latest/devguide/real-time-websocket-client.html). 

{% hint style="info" %}
Abonnementereignisse werden gesendet, sobald das Ereignis im GeoPard-Backend stattgefunden hat.
{% endhint %}

{% hint style="info" %}
Jedes Abonnementereignis hat eine eindeutige Kennung namens `uuid`, die nützlich ist, um verarbeitete und verpasste Ereignisse zu filtern, die von angefordert wurden [82. Abfrage: Abonnementereignisse wiederherstellen](/geopard-tutorials/de/api-dokumentation/geopard-api-anfragenubersicht/82.-abfrage-abonnementereignisse-wiederherstellen.md).
{% endhint %}

{% code lineNumbers="true" %}

```graphql
subscription FollowPlatformEvent {
  followPlatformEvent(userUuid: "<placeholder_of_user_uuid>") {
    uuid
    userUuid
    Aktion
    nodePath {
      Entität
      uuid
    }
  }
}
```

{% endcode %}


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