Adobe target server side Opt-in

We run adobe target server side tests on our site which also uses the onetrust consent management platform.

Once a user has accepted performance and metrics cookies what is the best way for that user to be opted-in to adobe target server side? Currently we just check that they accepted the cookie before calling the adobe target api but is there a better, more correct way for example using opt-in service? https://experienceleague.adobe.com/docs/id-service/using/implementation/opt-in-service/optin-overview.html?lang=en#implementation ? And if so how?