tests/keys/eddsa_key_ed448_pub.json

    {
      "use": "sig",
      "kid": "dadc0d66-e2ea-4d58-a2ea-3595d29bb604",
      "kty": "OKP",
      "crv": "Ed448",
      "alg": "EdDSA",
      "x": "J5dXafOvQWBrUabIHVqTbiDU4Jq7RtozL5jopRdiUGp-rs0Kz-f0-2r7scLjclKO9q8r3m9_YGAA"
    }