2021-12-15 1:01:03[1639530063.7972] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 26.0713
    [size] => -2371
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 7825.399277103125 while available 0.798488394743
)

2021-12-15 8:01:02[1639555262.8727] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 26.2277
    [size] => -2371
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 7872.343328490625 while available 0.798488394743
)