| Connected Account | The connected account to use for the request | Connected Account | Yes | |
| Email | Email of new subscriber | Email | Yes | |
| Confirmation timestamp | | Text (Short) | No | |
| Confirmation IP | | Text (Short) | No | |
| Field ID 1 | The ID of the field to add custom field to | Text (Short) | No | |
| Value 1 | The value to set on custom field | Text (Long) | No | |
| Field ID 2 | The ID of the field to add custom field to | Text (Short) | No | |
| Value 2 | The value to set on custom field | Text (Long) | No | |
| Field ID 3 | The ID of the field to add custom field to | Text (Short) | No | |
| Value 3 | The value to set on custom field | Text (Long) | No | |
| Name | | Text (Short) | No | |
| Resubscribe? | Whether to reactivate subscriber | True/False | No | |
| Signup IP | | Text (Short) | No | |
| Signup timestamp | | Text (Short) | No | |
| Type | | Predefined Choice List | No | |