| Name | Type | Description | Notes |
|---|---|---|---|
| userId | string | The user's account ID according to your systems. Note that user IDs are case sensitive. | [optional] |
| sessionId | string | The user's current session ID, used to tie a user's action before and after login or account creation. Required if no user_id values is provided. | [optional] |
| deviceIp | string | IP address of the request made by the user. Recommended for historical backfills and customers with mobile apps. | [optional] |
| originTimestamp | string | Represents the time the event occured in your system. Send as a UNIX timestamp in milliseconds in string. | [optional] |
| item | Item | [optional] | |
| customInfo | CustomInfo | [optional] |