{"access_token":"XXXXXXX","public_key":"XXXXXX","refresh_token":"XXXXXX","live_mode":false,"user_id":XXXX,"token_type":"bearer","expires_in":15552000,"scope":"offline_access read write"}

response = Net::HTTP.start(uri.hostname, uri.port, req_options) do |http|
    http.request(request)
  end