curl --request GET \
  --url https://api.criteo.com/preview/marketing-solutions/campaigns/{campaign-id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "attributes": {
      "advertiserId": "<string>",
      "budgetAutomation": {
        "automatedBudgetConfiguration": {},
        "enabled": true
      },
      "id": "<string>",
      "name": "<string>",
      "spendLimit": {
        "spendLimitAmount": {
          "value": 123
        }
      }
    },
    "id": "<string>",
    "type": "Campaign"
  },
  "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>"
    }
  ]
}