2021-12-09 19:01:04[1639076464.5593] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 27.2805
    [size] => -2372
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 8191.7987701875 while available 0.798488394743
)

2021-12-09 23:01:02[1639090862.2852] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 27.1299
    [size] => -2372
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 8146.5765457125 while available 0.798488394743
)