import type { AudibleCredentials } from './types.js';
/** Sign an Audible API request using RSA SHA256 with the device private key */
export declare const signRequest: (method: string, path: string, body: string, credentials: AudibleCredentials) => {
    'x-adp-token': string;
    'x-adp-alg': string;
    'x-adp-signature': string;
};
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