curl --request GET \
  --url https://api.criteo.com/preview/marketing-solutions/ads/{ad-id}/product-boost/{product-set-id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "attributes": {
      "adId": "<string>",
      "boostingFactor": 123,
      "modificationDate": "<string>",
      "productSetId": "<string>"
    },
    "type": "<string>"
  },
  "errors": [
    {
      "code": "<string>",
      "detail": "<string>",
      "instance": "<string>",
      "source": {},
      "stackTrace": "<string>",
      "title": "<string>",
      "traceId": "<string>",
      "traceIdentifier": "<string>"
    }
  ],
  "warnings": [
    {
      "code": "<string>",
      "detail": "<string>",
      "instance": "<string>",
      "source": {},
      "stackTrace": "<string>",
      "title": "<string>",
      "traceId": "<string>",
      "traceIdentifier": "<string>"
    }
  ]
}