Wrong Product Image

Hello,
my products show in SERP with a wrong image.
As the TS snippet has no image for the product (uses just the TS logo on any product), Google choose a random image from the product page (usually a related product).

As the snippet is written by an external source (https://widgets.trustedshops.com/reviews/tsSticker/tsProductSticker.js), Is there a way to specify the product image in the TS ld+json structured data?