export interface FundWithdrawalDetails {
    quoted_asset?: string;
    withdrawal_request_amount?: string | number;
    external_account_id?: string;
}
export interface JWTPayload {
    auth_embedded?: boolean;
    reference_id?: string;
    payload?: {
        use_new_sdk?: boolean;
        withdrawal_details?: FundWithdrawalDetails;
        [key: string]: unknown;
    };
    [key: string]: unknown;
}
export declare function decodeJWT(token: string): JWTPayload | null;
export declare const ALLOWED_CONNECT_ISSUER_HOSTNAMES: readonly string[];
export declare function isConnectIssuer(iss: unknown): boolean;