Get all custom fields

Example response

[
  {
    "id": 18833,
    "orgId": 100737,
    "name": "CF1A_update",
    "description": "CF1A",
    "isActive": true,
    "scope": "REWARD",
    "dataType": "STRING",
    "createdBy": 75152721,
    "createdOn": 1741847093000,
    "createdOnDateTime": "2025-03-13T06:24:53Z",
    "lastUpdatedBy": 75155282,
    "lastUpdatedOn": 1741886142000,
    "lastUpdatedOnDateTime": "2025-03-13T17:15:42Z"
  }
]