get http://example.com/.saplingapp.io/api/v1/beta/profiles/fields/PFID88363012552753
Returns an individual profile field for all users at your company.
These will be alphanumeric for permanent fields (i.e. last_name) and Fields IDs for custom fields (i.e. PFID34357507802737).
Fields IDs can be retrieved from the Get all Fields request.