@yarmo But this doesn't (gpg --armor --sign) but this is just the same signature, just with the plaintext signed message embedded inside

-----BEGIN PGP MESSAGE-----

owGbwMvMwCVmtF7e8sg75k+Mp7mTGOJef/hcklpcwtVRysIgxsUgK6bIkl+dvXPl
NqPQOCnmgzDFrExAlV8YuDgFYCKurAz/zF6LH1nDe+vk+mVn73LdD5PSkT3+ZMsz
qU9qPPLT0uQdTzP8L1u4re2G9bojezsZZVb9bdw4e73DyfvNV6zu3JNdO80+lAsA
=+VXF
-----END PGP MESSAGE-----

Error: No cleartext signed message.