SubscribeKafkaTopic <- function(consumer.base.uri, topic) {
  response <- POST(url=paste(consumer.base.uri,
                             "subscription", sep="/"),
                   content_type("application/vnd.kafka.v2+json"),
                   body = paste0('{"topics":["',
                                 topic,
                                 '"]}')
  )
  if(response$status_code == 204) {
    return(response)
  } else stop(response)
}