2021-10-24 12:01:03[1635076863.0724] - new buy order: Array
(
    [contract] => DOT_USDT
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    [tif] => gtc
)
 Array
(
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    [is_reduce_only] => 
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2021-10-24 17:01:04[1635094864.4647] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 42.2784
    [size] => 34
    [tif] => gtc
)
 Array
(
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