{"open_kfid":"kfxxxxxxxxxxxxxx","external_userid":"wmxxxxxxxxxxxxxxxxxx"}curl --location -g --request POST '/cgi-bin/kf/customer/cancel_upgrade_service?access_token={{accesstoken}}' \
--header 'Content-Type: application/json' \
--data-raw '{"open_kfid":"kfxxxxxxxxxxxxxx","external_userid":"wmxxxxxxxxxxxxxxxxxx"}'{
"errcode": 0,
"errmsg": "ok"
}