How to install and use the Bodymovin extension for After Effects, which lets you export After Effects compositions as JSON files.
About Lottie: https://airbnb.io/lottie/#/supported-features
Bodymovin extension: https://exchange.adobe.com/creativecloud.details.12557.bodymovin.html
Full course, plus downloadable assets: https://wfl.io/after-effects-lottie