| Name | Type | Description | Notes |
|---|---|---|---|
| campaignId | string | Unique campaign ID, assigned by Voucherify. | |
| referrerId | string | Unique referrer ID, assigned by Voucherify. This is the customer ID of a customer that is referring this customer. | |
| relatedObjectId | string | Related object id | |
| relatedObjectType | string | Related object type, i.e. `redemption`. | |
| date | \DateTime | Timestamp representing the date and time when the customer was referred in ISO 8601 format. |