CreateEventTopicMap - Given array of event topics, returns map of valid event topics, to be used when performing selective field based queries on event topics.

ParseNumber - Given an integer as string, attempts to parse it.

RangeChecker - Checks whether given number range is at max `limit` far away.

StringifyEventTopics - Given array of event topic signatures, returns their stringified form, to be required for publishing data to subscribers and persisting into database.