2021-10-26 10:01:04[1635242464.1588] - new sell order: Array
(
    [contract] => DOT_USDT
    [price] => 43.8408
    [size] => -0
    [tif] => gtc
)
 Array
(
    [label] => INVALID_ARGUMENT
    [detail] => invalid size
)

2021-10-26 21:01:02[1635282062.711] - new sell order: Array
(
    [contract] => DOT_USDT
    [price] => 45.7422
    [size] => 1
    [tif] => gtc
)
 Array
(
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    [contract] => DOT_USDT
    [mkfr] => 0
    [tkfr] => 0.0005
    [tif] => gtc
    [is_reduce_only] => 
    [create_time] => 1635282062.577
    [price] => 45.7422
    [size] => 1
    [refr] => 0
    [left] => 1
    [text] => api
    [fill_price] => 0
    [user] => 621225
    [status] => open
    [is_liq] => 
    [refu] => 0
    [is_close] => 
    [iceberg] => 0
)