CreateTopics Request (Version: 3) => [create_topic_requests] timeout validate_only create_topic_requests => topic num_partitions replication_factor [replica_assignment] [config_entries] topic => STRING num_partitions => INT32 replication_factor => INT16 replica_assignment => partition [replicas] partition => INT32 replicas => INT32 config_entries => config_name config_value config_name => STRING config_value => NULLABLE_STRING timeout => INT32 validate_only => BOOLEAN