curl --location --request POST 'https://www.micecube.com/api/participant/getSignCode' \
--header 'Mice-Auth: {"UserPublicKey":"6adfFJGisaFa70afz1idGh0Ty6VeuCf","ActivityId":202706,"Time":1661532605,"Version":1,"Signature":"3210d4434263451b8867314022b9a61a"}' \
--form 'mobile=""'
{
"code": 1,
"msg": "查询成功",
"data": {
"sign_code": "874639"
}
}