[ 'ContractPosition' => '持仓', ], 'fields' => [ 'user_id' => '用户ID', 'side' => '仓位方向', 'contract_id' => '合约ID', 'symbol' => 'symbol', 'unit_amount' => '合约面值', 'lever_rate' => '杠杆倍数', 'hold_position' => '持仓数量', 'avail_position' => '可平数量', 'freeze_position' => '冻结数量', 'position_margin' => '保证金', 'avg_price' => '开仓平均价', 'symbol' => '币种符号' ], 'options' => [], ];