2021-12-24 9:01:03[1640336463.2314] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 29.1162
    [size] => 961
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 3539.5545273 while available 0.287950097915
)

2021-12-24 13:01:03[1640350863.9192] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 29.144
    [size] => 961
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 3542.934076 while available 0.287950097915
)

2021-12-24 17:01:03[1640365263.1308] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 29.0719
    [size] => 961
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 3534.16913135 while available 0.287950097915
)

2021-12-24 19:01:03[1640372463.3649] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 29.3608
    [size] => 960
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 3565.575552 while available 0.287950097915
)