> 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/jpn/apidokyumento/geopard-apirikuesuto/1-sabusukuripushon-ibentowo.md).

# 1. サブスクリプション: イベントを取得

次のときにサブスクリプションをフォローする `挿入`/`変更`/`削除` "Farm"、"Field"、"FieldSatelliteImage"、"RasterAnalysisMap"、"VectorAnalysisMap"、その他のエンティティで操作が発生したとき。

サブスクリプション機構はMQTTとWebSocketの上に構築されています。統合を開始するには次を読むことを推奨します [AWS AppSync サブスクリプション記事](https://docs.aws.amazon.com/appsync/latest/devguide/real-time-websocket-client.html). 

{% hint style="info" %}
サブスクリプションイベントはGeoPardバックエンドでイベントが発生したときにすぐ送信されます。
{% endhint %}

{% hint style="info" %}
すべてのサブスクリプションイベントには次の名前の一意の識別子があります `uuid`は、から要求された処理済みおよび見逃したイベントをフィルタリングするのに役立ちます [82. クエリ: サブスクリプションイベントの復元](/geopard-tutorials/jpn/apidokyumento/geopard-apirikuesuto/82-kueri-sabusukuripushonibentowo.md).
{% endhint %}

{% code lineNumbers="true" %}

```graphql
subscription FollowPlatformEvent {
  followPlatformEvent(userUuid: "<placeholder_of_user_uuid>") {
    uuid
    userUuid
    action（操作）
    nodePath {
      entity（エンティティ）
      uuid
    }
  }
}
```

{% endcode %}


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