List all REST Hook subscriptions

JWT is required for this endpoint with at least one of the following scopes: o{params.orgId}-configurations:w,o{params.orgId}-configurations:r,o{params.orgId}-outboundWebhooks:w,o{params.orgId}-outboundWebhooks:r,o:w,o:r,s-o:w,s-o:r<br/><br/>Endpoint name: listSubscriptions