curl --request GET \
  --url https://api.criteo.com/preview/campaigns/{campaignId}/targeting/domain-rules \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "attributes": {
      "data": [
        {
          "active": true,
          "readOnly": true,
          "value": "<string>"
        }
      ]
    },
    "type": "<string>"
  }
}