2021-10-07 15:13:13[1633619593.7362] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 34.9629
    [size] => 42
    [tif] => gtc
)
 Array
(
    [id] => 74788907124
    [contract] => DOT_USDT
    [mkfr] => 0
    [tkfr] => 0.0005
    [tif] => gtc
    [is_reduce_only] => 
    [create_time] => 1633619593.615
    [finish_time] => 1633619593.615
    [price] => 34.9629
    [size] => 42
    [refr] => 0
    [left] => 0
    [text] => api
    [fill_price] => 34.9618
    [user] => 621225
    [finish_as] => filled
    [status] => finished
    [is_liq] => 
    [refu] => 0
    [is_close] => 
    [iceberg] => 0
)