You can use the withProperties query parameter to specify whether additional information from specific tables columns are returned in the response.
NOTE: To enable table columns for these queries, set the Show in wizards option in the column properties of the relevant columns in the Designer.
TIP: You can delimit the names of multiple columns with commas.
Example
The following query determines the number of all identities and also returns their preferred name and title:
https://<host name>/ApiServer/portal/person/all?withProperties=PreferredName,Title
Response:
| { | 
| "TotalCount": 105950, | 
| "TableName": "Person", | 
| "Entities": [ | 
|         { | 
| "Display": "100, User (USER1)", | 
| "LongDisplay": "100, User (USER1)", | 
| "Keys": [ | 
| "bbf3f8e6-b719-4ec7-be35-cbd6383ef370" | 
| ], | 
|             "Columns": { | 
|                 "DefaultEmailAddress": { | 
| "Value": "USER1@qs.ber", | 
| "IsReadOnly": true | 
| }, | 
|                 "IdentityType": { | 
| "Value": "Primary", | 
| "IsReadOnly": true, | 
| "DisplayValue": "Primary identity" | 
| }, | 
|                 "PreferredName": { | 
| "Value": "Johnny", | 
| "IsReadOnly": true | 
| }, | 
|                 "Title": { | 
| "Value": "Dr.", | 
| "IsReadOnly": true | 
| }, | 
|                 "XObjectKey": { | 
| "Value": "<Key><T>Person</T><P>bbf3f8e6-b719-4ec7-be35-cbd6383ef370</P></Key>", | 
| "IsReadOnly": true | 
| } | 
| } | 
| } | 
