That did not work for me.
Here is what I ended up doing on all three servers:
apt-key del 7BD9BF62
apt-key del B49F6B46
apt-key del 8D88A2B3
apt-key adv --fetch-keys https://nginx.org/keys/nginx_signing.key
gpg --dry-run --quiet --no-keyring --import --import-options import-show /usr/share/keyrings/nginx-keyring.gpg