当用户进入会话时

curl --location --request POST 'https://chat.jijyun.cn' \
--header 'Content-Type: application/json' \
--data-raw '{
    "event_id": "string",
    "event_type": "string",
    "company_id": "string",
    "webhook_url": "string",
    "data": {
        "bot_id": "string",
        "bot_name": "string",
        "user_id": "string",
        "times": "string",
        "nickname": "string",
        "_user_type": "string"
    }
}'