[ 'OtcAccount' => 'OtcAccount', ], 'fields' => [ 'user_id' => '用户id', 'coin_id' => '币种id', 'coin_name' => '币种名称', 'usable_balance' => '可用余额', 'freeze_balance' => '冻结余额', ], 'options' => [ ], ];