gistfile1.txt

func (tl *TradeLog) UnmarshalJSON(b []byte) error {
	type AliasTradeLog TradeLog
	type mask struct {
		Timestamp int64 `json:"timestamp"`
		*AliasTradeLog
	}
	m := mask{
		Timestamp:     0,
		AliasTradeLog: (*AliasTradeLog)(tl),
	}
	err := json.Unmarshal(b, &m)
	if err != nil {
		return err
	}
	tl.Timestamp = time.Unix(0, m.Timestamp*1000000)
	return nil
}