Return the blinded credential builder which will be used to create the blinded credential
OptionalaccumulatorPublicKeys: Map<number, AccumulatorPublicKey>OptionalpredicateParams: Map<string, PredicateParamType>OptionalcircomOutputs: Map<number, Uint8Array[][]>OptionalblindedAttributesCircomOutputs: Uint8Array[][]StaticfromJSON
A request for getting a blinded credential. Sent by the user to the signer who will verify it and then sign a blinded credential. It contains a presentation which proves predicates about the blinded attributes