Properties
attributes
attributes: Record<string, any>
browser_id
browser_id: string
created_at
created_at: number
identity_id
identity_id: Nullable<string>
product
product: { reference_id: string }
referrer
referrer: Nullable<string>
session_id
session_id: string
source
source: Nullable<string>
Optional tags
tags: undefined | string[]