OculusEntitlementCheck.cs

using UnityEngine;
using Oculus.Platform;
using Oculus.Platform.Models;
using System.Collections;

public class OculusEntitlementCheck : MonoBehaviour {
    void Awake () {
    Oculus.Platform.Core.AsyncInitialize();
    Oculus.Platform.Entitlements.IsUserEntitledToApplication().OnComplete(callbackMethod);
    }

    void callbackMethod (Message msg) {
     if (!msg.IsError) {
          // Entitlement check passed
       } else {
          // Entitlement check failed
        UnityEngine.Application.Quit();
       }
    }
}