I am using protobuf as serialization to send DomainEvent(s) from one 
microservice to another one.
So from one side i am sending messages to a Kafka topic (messages are 
protobuf serialized DomainEvent like UserCreated(...) or UserUpdated(...)) 
and it works good.
My .proto file is simple like

message UserCreated {

message UserUpdated {

The problem is that when reading from the other side i need to know the 
specific type/class of the message like UserCreated(...) vs 
How can i know if the bytes received from Kafka are a UserCreated message 
or a UserUpdated message?
Do i need to create the .proto file in a different way? Do i need to store 
the message type somewhere in the .proto file?

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