To add an existing Astro Private Cloud user to a Deployment, you need:
astro deployment list or request the id value in the workspaceDeployment query.id value in a users query or run astro workspace user list.DEPLOYMENT_ADMIN, DEPLOYMENT_EDITOR, or DEPLOYMENT_VIEWER.The following query adds a user to a Deployment as a Deployment viewer, then returns the user and Deployment information back to the requester.