I finally GOT it
Paste this in the comsole
// VIEW YOUR AVATAR THUMBNAIL CUSTOMIZATIONS: https://avatar.roblox.com/v1/avatar/thumbnail-customizations
// doing ajax because easy csrf handling w/their middleware lol
$.ajax({
method: "POST",
url: "https://avatar.roblox.com/v1/avatar/thumbnail-customization",
contentType: "application/json",
data: JSON.stringify({
"camera": {
// Ranges are inclusive.
"distanceScale": 1.5, // 0.5 to 4
"fieldOfViewDeg": 30, // 15 to 45
"xRotDeg": 0, // -20 to 20
"yRotDeg": 0 // -60 to 60
},
"emoteAssetId": 0, // emote asset id
// idleAnimationAssetId used to exist here, it has since been removed.
"thumbnailType": 0 // 1 = Closeup (headshot), 2 = FullBody (bodyshot). Closeup and FullBody can have different configurations.
})
});
Thumbnail type 0
EmoteassteId 0