Azure Monitor multiple subscriptions

PMorgan_1116 Hi don't really know what your thinking on monitor, but from my nearly no experience to Azure Monitor, you cannot monitor the resource itself from your subscription, however, you can create a alert rule , and send a notification to a logic app or a email (action groups) to your support team, on your subscription and send your alerts from another subscription to your designated "teams Channel", or send a email to someone. 
I know this is not the answer to your question, but I hope it helps you figure out what you need.