User metadata
| Name | Type | Description | Notes |
|---|---|---|---|
| user_id | str | The id of the user. | |
| str | The user's email address. | ||
| preferences | str, none_type | The user's JSON serialized preferences. Schema defined in Dashbird. | [optional] |
| any string name | bool, date, datetime, dict, float, int, list, str, none_type | any string name can be used but the value must be the correct type | [optional] |