How to access subrecord of record

The JSON:

{{“id”:“1234”,
“name”:“Del Stewart”,
“email”:"dstewart@xxx.com",
“first_name”:“Del”,
“last_name”:“Stewart”,
“picture”:{“data”:{“is_silhouette”:false,
“url”:“https://fbcdn-profile-a.akamaihd.net/hprofile-ak-xfa1/v/t1.0-1/p50x50/blork.jpg”}}}}

cast to a dynamic variable (dv) gives me dv.name as string, dv.email as string, etc. What is the shorthand access to the subrecord? dv.picture.url as string does not work, nor does (dv.picture as dynamic).url as string, nor any other logical syntax I can think of.

Picture has a property called data.

You need to remove the extra brackets around the outside to make it proper json. Then its dv.picture.data.url