curl --location --request POST 'https://saas-open.vhall.com/v3/webinars/live/cancel-role' \
--header 'platform: 15' \
--header 'Content-Type: application/x-www-form-urlencoded' \
--data-urlencode 'webinar_id=658171537' \
--data-urlencode 'email=1750686063@vhall.com' \
--data-urlencode 'app_key=75844ad7a2a5f2b421c04a125b197996' \
--data-urlencode 'sign={{sign}}' \
--data-urlencode 'signed_at={% mock 'timestamp' , 's' %}' \
--data-urlencode 'sign_type=0'{
"code": 200,
"msg": "",
"data": {},
"request_id": "ac199515-bd8a-44a1-82ad-c3915a679e28"
}