Book JSON bug

Hello,

I create a writtenbook using this command :

give @p minecraft:written_book 1 0 {author:"Testman",title:"Test",pages:["{text:\"Point :\",extra:[{score:{name:\"@p\",objective:\"Point\"}}]}"]}

When I give it to me as an OP player on the server, there is no bug. (Screen 2)

Then, I give it to me as a normal player (Non-OP), the book shows the JSON text... (Screen 1)

Any solution to resolve this problem ???