import { WebhookEvent } from "./model";
export declare class BoldSignSignatureException extends Error {
}
export declare class WebhookUtility {
    static readonly BOLD_SIGN_EVENT_HEADER = "X-BoldSign-Event";
    static readonly BOLD_SIGN_SIGNATURE_HEADER = "X-BoldSign-Signature";
    static readonly DEFAULT_TIME_TOLERANCE = 300;
    static parseEvent(jsonPayload: string): WebhookEvent;
    private static resolveEventData;
    static validateSignature(jsonPayload: string, signatureHeader: string, secretKey: string, tolerance?: number): void;
    private static parseSignatureHeader;
    private static generateSignature;
    private static isSignatureMatched;
}