2021-11-01 2:01:02[1635732062.9799] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 43.1444
    [size] => 0
    [tif] => gtc
)
 Array
(
    [label] => INVALID_ARGUMENT
    [detail] => invalid size
)

2021-11-01 18:01:04[1635789664.3677] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 48.7606
    [size] => 11
    [tif] => gtc
)
 Array
(
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    [contract] => DOT_USDT
    [mkfr] => 0
    [tkfr] => 0.0005
    [tif] => gtc
    [is_reduce_only] => 
    [create_time] => 1635789664.195
    [finish_time] => 1635789664.195
    [price] => 48.7606
    [size] => 11
    [refr] => 0
    [left] => 0
    [text] => api
    [fill_price] => 48.7606
    [user] => 621225
    [finish_as] => filled
    [status] => finished
    [is_liq] => 
    [refu] => 0
    [is_close] => 
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)

2021-11-01 22:01:02[1635804062.9906] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 50.3463
    [size] => 23
    [tif] => gtc
)
 Array
(
    [id] => 85345503655
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    [tif] => gtc
    [is_reduce_only] => 
    [create_time] => 1635804062.873
    [finish_time] => 1635804062.873
    [price] => 50.3463
    [size] => 23
    [refr] => 0
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    [text] => api
    [fill_price] => 50.3345
    [user] => 621225
    [finish_as] => filled
    [status] => finished
    [is_liq] => 
    [refu] => 0
    [is_close] => 
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)