Fix radio JSON
Fix radio JSON

Test Plan: make sure it sends the right json

huangins/perseus,ariabuckles/perseus,ariabuckles/perseus,learningequality/perseus,ariabuckles/perseus,ariabuckles/perseus,sachgits/perseus,abe4mvp/perseus,huangins/perseus,abe4mvp/perseus,alexristich/perseus,iamchenxin/perseus,chirilo/perseus,daukantas/perseus,sachgits/perseus,iamchenxin/perseus,daukantas/perseus,junyiacademy/perseus,junyiacademy/perseus,alexristich/perseus,learningequality/perseus,chirilo/perseus