https://docs.oracle.com/en/cloud/saas/marketing/eloqua-rest-api/api-bulk-2.0-campaignresponses.html
REST API for Oracle Eloqua Marketing Cloud Service - campaignResponses REST Endpoints
The Oracle Eloqua Marketing Cloud Service REST APIs enable you to extend the functionality of the product, build Apps, and perform high volume data transfers.
rest apioracle eloquamarketing cloudserviceendpoints