Get User Property Keys

Returns the keys of all properties for a user.Note: This operation does not access the [user properties](https://confluence.atlassian.com/x/8YxjL) created and maintained in Jira.**[Permissions](#permissions) required:** * *Administer Jira* [global permission](https://confluence.atlassian.com/x/x4dKLg), to access the property keys on any user. * Access to Jira, to access the calling user's property keys.