Proxy events from self hosted sentry to sentry.io

We have couple of servers where egress traffic is only whitelisted to self hosted sentry endpoint.

Earlier we were using self hosted sentry, so had no issues.

Now we moved to sentry(dot)io. My team is not in favour of whitelisting sentry(dot)io endpoint and is asking to build a reverse proxy such that events coming from sentry.example.com will be forwarded to sentry.io

Is this possible ? Any help would be great.