{
  "$schema": "https://json-schema.org/draft/2019-09/schema",
  "title": "message action",
  "description": "メッセージアクション",
  "type": "object",
  "allOf": [{ "$ref": "line-action-base.json" }],
  "required": ["text"],
  "properties": {
    "text": {
      "type": "string",
      "description": "メッセージのテキスト"
    }
  }
}