How to apply animation in Blender

He sent me the script, here it is

Check it out and let me know if you can see the “import json” file, also be sure to firstly select the body of your character or the head which contains blendshapes, and only after then run the script, also after it select the blendhsaped body and let me know if you see that “import json” button.

Can I ask you what you do for eyes, lower jaw and eyebrow animation? Could to export the animation of those into your character in blender? Thank you.