Tellraw change_page does not function

When using tellraw as a clickable in change_page (according to minecraftjson.com). It does not function. Command Used:

/tellraw @a ["",{"text":"Addition to summary,","color":"dark_purple","bold":"true","clickEvent":

{"action":"change_page","value":"http://minecraft.com"}

,"hoverEvent":{"action":"show_text","value":{"text":"","extra":[

{"text":"Change Page To!","color":"light_purple"}

]}}}]