[MC-87083] JSON Signs don't work anymore

I've looked around in the forums and in help.mojang.com and still cant find a fix to this JSON sign command. Any way you can help?

Command:

/blockdata ~ ~1 ~ {Text1:"{text:\"Click\",bold:\"true\",color:red,clickEvent:{action:\"run_command\",value:\"/fill ~-2 ~1 ~-8 ~2 ~-4 ~ minecraft:air\"}}",Text2:"{text:\"To\",bold:\"true\",color:gold}",Text3:"{text:\"Clear\",bold:\"true\",color:red}",Text4:"{text:\"Structure\",bold:\"true\",color:gold}"}

P.S. I also attached an image of what shows up on the sign.