scrape instagram html json

instascrape.rb

require 'rubygems'

require 'open-uri'
require 'json'

require 'nokogiri'

doc = Nokogiri::HTML(open("https://www.instagram.com/chrisallick/"))
data = ""
doc.css('script').each do |script|
  if script.content[0,30].include? "window._sharedData"
    data = script.content[21...-1]
    data = JSON.parse(data)
  end
end

data["entry_data"]["ProfilePage"][0]["graphql"]["user"]["edge_owner_to_timeline_media"]["edges"].each do |node|
  puts node["node"]["display_url"]
end