It’s ok to use it for lottie ?
Update I found a response in case anyone was also wondering:
"You will need to save it as SVG after you can open it with AI and save it with *.AI extension. Open drop AI file to AE and convert to shapes, but that might not work perfectly depends on how it drawn. But I’m not sure how sketch saves those assets and what assets you used, as if they will me as images in svg, that won’t work so that will require some additional work to do 
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