2021-12-16 16:01:03[1639670463.1946] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 27.51
    [size] => -2373
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 8264.1957103125 while available 0.798488394743
)

2021-12-16 18:01:03[1639677663.9485] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 26.6548
    [size] => -2372
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 8003.91333955 while available 0.798488394743
)

2021-12-16 20:01:03[1639684863.0435] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 26.2464
    [size] => -2371
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 7877.9562042 while available 0.798488394743
)