2021-12-08 11:01:03[1638961264.001] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 28.3277
    [size] => -2367
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 8488.321830028125 while available 0.839237144743
)

2021-12-08 13:01:03[1638968463.185] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 28.672
    [size] => -2367
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 8591.490432 while available 0.839237144743
)

2021-12-08 15:01:03[1638975663.681] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 29.7064
    [size] => -2369
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 8908.966998175 while available 0.839237144743
)

2021-12-08 22:01:03[1639000863.4108] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 29.3765
    [size] => -2378
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 8843.49972396875 while available 49.798488394743
)