{"keys":[{"crv":"Ed25519","x":"atPC599hIoKV153kKVZ6pb66BJs9V6q6yIKflrTalaY","kty":"OKP","kid":"2d492c5189f0ff99","alg":"EdDSA","use":"sig"}],"format":"base64url(JSON payload) + '.' + base64url(Ed25519 signature over the first part); payload.kid names the key"}