syntax = "proto3"; package messagebus.v1; enum MessageBusEntityType { OTHER = 0; INVALIDATION_REQUEST = 1; } message MessageBusEntity { string queryKey = 1; } message SubscribeToConnectInvalidationRequestsRequest {} service MessageBusService { rpc SubscribeToConnectInvalidationRequests(SubscribeToConnectInvalidationRequestsRequest) returns (stream MessageBusEntity); }