トピック変更イベント
| Name | Type | Description | Notes |
|---|---|---|---|
| user_id | str | 変更者UUID | |
| before | str | 変更前トピック | |
| after | str | 変更後トピック | |
| any string name | bool, date, datetime, dict, float, int, list, str, none_type | any string name can be used but the value must be the correct type | [optional] |