^({)?(?<= )(.*)(})?$
"$2":"",
UserId
UserOrderId
ChargeAccount
BuyNum
GoodsId
GameArea
GameServer
PassCheck
Sign
"UserId":""
"UserOrderId":""
"ChargeAccount":""
"BuyNum":""
"GoodsId":""
"GameArea":""
"GameServer":""
"PassCheck":""
"Sign":""