Activates the user with the specified id.
The user is then allowed to sign in again and will be notified via email.
<Check title="Required Permissions" icon="key">The user must be an admin or have `user-manage-config:write` permissions.</Check>
The user is then allowed to sign in again and will be notified via email.
user-manage-config:write permissions.Bearer authentication of the form Bearer <token>, where token is your auth token.