Looking for the CLI call to create a Memory store cluster that uses the keys json file?

Question

I'm looking for the CLI call to create a Memory store cluster that uses the keys json file?

It seems like this link/command authenticates the gcloud cli with a service account credential. If the service account has IAM policy to memorystore, and the main issue is just authentication when running the create command, this might work, but I'd like to confirm.

I've reviewed I found this: https://cloud.google.com/memorystore/docs/memcached/creating-managing-instances and this https://cloud.google.com/appengine/docs/standard/python/memcache/using

but am struggling on putting it all together.