EssenceEvent(群精华)

{
    "time": 1640995200,
    "self_id": 123456789,
    "post_type": "notice",
    "notice_type": "essence",
    "sub_type": "add",
    "group_id": 0,
    "user_id": 0,
    "sender_id": 0,
    "operator_id": 0,
    "message_id": 0
}