curl --request GET \
  --url https://cloud.memsource.com/web/api2/v1/customFields

{
  "totalElements": 123,
  "totalPages": 123,
  "pageSize": 123,
  "pageNumber": 123,
  "numberOfElements": 123,
  "content": [
    {
      "uid": "<string>",
      "name": "<string>",
      "type": "MULTI_SELECT",
      "allowedEntities": [
        "PROJECT"
      ],
      "options": {
        "truncatedOptions": [
          {
            "uid": "<string>",
            "value": "<string>",
            "deprecated": true,
            "used": true
          }
        ],
        "remainingCount": 123
      },
      "createdAt": "2023-11-07T05:31:56Z",
      "createdBy": {
        "firstName": "<string>",
        "lastName": "<string>",
        "userName": "<string>",
        "email": "<string>",
        "role": "SYS_ADMIN",
        "id": "<string>",
        "uid": "<string>"
      },
      "lastModified": "2023-11-07T05:31:56Z",
      "lastModifiedBy": {
        "firstName": "<string>",
        "lastName": "<string>",
        "userName": "<string>",
        "email": "<string>",
        "role": "SYS_ADMIN",
        "id": "<string>",
        "uid": "<string>"
      },
      "requiredFrom": "2023-11-07T05:31:56Z",
      "required": true,
      "description": "<string>"
    }
  ],
  "sort": {
    "orders": [
      {
        "direction": "ASC",
        "property": "<string>"
      }
    ]
  }
}