type `AuthenticationSignature`

`common.AuthenticationSignature`

Field	Type	Description
verifier	DynamicVerifier	Verifier of the requester.
signature	bytes	Cryptographic signature of the challenge nonce.

{
  "verifier": {
    "signature_system": 1,
    "verifier": "VerifierLengthChangesByAlgo="
  },
  "signature": "ByteLengthSignatureVariesByAlgo="
}