OID4VCICredentialRequestInitiation
issuerUrlstringrequired
Example: 
https://issuer.example.compreAuthorizedCodestring
Example: 
pre-auth-code-xyzauthorized object
accessTokenstringrequired
Example: 
access-tokencredentialIdentifierstringrequired
Example: 
credential-typeadditionalRequestParamsobject
OID4VCICredentialRequestInitiation
{
  "issuerUrl": "https://issuer.example.com",
  "preAuthorizedCode": "pre-auth-code-xyz",
  "authorized": {
    "accessToken": "access-token",
    "credentialIdentifier": "credential-type",
    "additionalRequestParams": {}
  }
}