ParseCities converts the citiesJson string into a slice of City structs and prints them in this case to stdout to copy paste as the struct below.

SOURCE: 1,000 largest US cities https://gist.github.com/Miserlou/c5cd8364bf9b2420bb29.

NOTE: these are the default searchable event source types that show up in the home event list view.

RoleClaim represents a formatted role claim.