curl --location --request POST 'https://domain-open-api.getmx.com/v1/domain/group-pay/bind' \
--form 'token="token"' \
--form 'target_domain_id="12345678"' \
--form 'domain="mail.com"' \
--form 'group_pay_id="12345678"'{
"code": 0,
"msg": "string",
"data": null
}