| Name | Type | Description | Notes |
|---|---|---|---|
| id | int | Trade ID | [optional] |
| create_time | float | Trading time | [optional] |
| contract | str | Futures contract | [optional] |
| order_id | int | Order ID related | [optional] |
| size | int | Trading size | [optional] |
| price | str | Trading price | [optional] |
| underlying_price | str | Underlying price | [optional] |
| role | str | Trade role. Available values are `taker` and `maker` | [optional] |