| Name | Type | Description | Notes |
|---|---|---|---|
| currency | string | Transfer currency name | |
| sub_account | string | Sub account user ID | |
| direction | string | Transfer direction. to - transfer into sub account; from - transfer out from sub account | |
| amount | string | Transfer amount | |
| uid | string | Main account user ID | [optional] [readonly] |
| timest | string | Transfer timestamp | [optional] [readonly] |
| source | string | Where the operation is initiated from | [optional] [readonly] |
| sub_account_type | string | Target sub user's account. `spot` - spot account, `futures` - perpetual contract account | [optional] [default to 'spot'] |