String parse JS eval
{
"is_commission":"0",    是否参与分销
"is_free_shipping":"0",        是否包邮
"sales_show_type":"goods",  销量展示
"team_num":"2",        成团人数
"is_alone":"1",         单独成团
"is_fictitious":"1",    虚拟成团
"fictitious_num":"1",   最多虚拟人数
"fictitious_time":"1",  虚拟成团时间
"is_team_card":"1",     参团卡显示
"is_leader_discount":"0",   团长优惠
"valid_time":"24",      拼团解散时间
"limit_num":"5",         限购数量
"refund_type":"back",     退款方式
"order_auto_close":"5"   订单支付时间
}