Gets a filtered list of Users

This is a read only endpoint that returns a list of users associated with an Insightly instance. Use this endpoint when you need to obtain a list of valid USER_IDs, for example, when you want to assign a task to a specific user (do not confuse the USER_ID with their CONTACT_ID). <br /> To filter with a field name and value, both field_name and field_value parameters must be provided. <br /> For other filters, only one optional parameter (excluding brief, top, skip and count_total) can be specified. <br /> Simple object graphs (excluding NOTELINKS) are returned if "brief=true" is used in the query string.