How to capture a specific value in Shell from a captured output variable?

How to capture a specific value in Shell from a captured output variable?

I wanted to find the highest value of "id" from the below output and then
get the associated "version" from it. Here is the response captured in a
variable. Greatly appreciate your help!
{"app_versions":[{"version":"16125","shortversion":"4.4.0","title":"App
1","timestamp":1377277516,"appsize":46110031,"mandatory":false,"minimum_os_version":"6.0","device_family":"iPhone/iPod","id":22,"app_id":25196,"download_url":"https://rink.hockeyapp.net/apps/b5dc72777668ca5716aa6aec8237058f/app_versions/22","status":2,"tags":["alpha"]},{"version":"16126","shortversion":"4.4.0","title":"App
1","timestamp":1377177516,"appsize":46330031,"mandatory":false,"minimum_os_version":"6.0","device_family":"iPhone/iPod","id":20,"app_id":25190,"download_url":"https://rink.hockeyapp.net/apps/b5dc72777668ca5716aa6aec8237058f/app_versions/20","status":2,"tags":["alpha"]}