{
  "message": "Civarro public key distribution v1: OCI image release verification example. 2026-09-29.\n",
  "signature_base64": "MEQCIDaOOWYej9x34T8P241N9gKNftGQfkdzL/z5tCs76gG4AiBHQWrOATCjm8C+33Tl24b8rPjKxqEjT+cymRncGrrgsA==",
  "signature_encoding": "ASN.1 DER ECDSA"
}