url = "xxxx";
data = {
"submitdata":"1$2^}2$2}3$1}4$1^}5$2^",
"submittype":1,
"curID":"23679247",
"t":"1526365748309",
"starttime":"2018/5/15 17:43:00",
"rn":"1035665234.11249411"
};
p = requests.post (url,data=data,proxies=proxies);
doesn"t feel like this, but you can use postman