2021-10-30 9:01:03[1635584463.5955] - new sell order: Array
(
    [contract] => DOT_USDT
    [price] => 42.823
    [size] => -41
    [tif] => gtc
)
 Array
(
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    [contract] => DOT_USDT
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    [tif] => gtc
    [is_reduce_only] => 
    [create_time] => 1635584463.469
    [price] => 42.823
    [size] => -41
    [refr] => 0
    [left] => -40
    [text] => api
    [fill_price] => 42.823
    [user] => 621225
    [status] => open
    [is_liq] => 
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    [is_close] => 
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)