{
 "key_id": "ar-deead467c0de",
 "algorithm": "ed25519",
 "public_key_base64": "gYq+cuwy5ezAzpoK5oHl5yLIm9lpTnAwyf8pvSzMG9I=",
 "signs": "the entry_hash (hex string, UTF-8 bytes) of every log entry",
 "entry_hash": "sha256 of the canonical JSON of the entry without entry_hash and signature (sorted keys, separators , and :, UTF-8)"
}