| Name | Type | Description | Notes |
|---|---|---|---|
| campaign_id | String | Unique campaign ID, assigned by Voucherify. | |
| referrer_id | String | Unique referrer ID, assigned by Voucherify. This is the customer ID of a customer that is referring this customer. | |
| related_object_id | String | Related object id | |
| related_object_type | String | Related object type, i.e. `redemption`. | |
| date | Time | Timestamp representing the date and time when the customer was referred in ISO 8601 format. |