import { SmsSignatureReq } from './SmsSignatureReq';
export declare class CreateSignatureRequest {
    private 'Content-Type'?;
    body?: SmsSignatureReq;
    constructor(contentType?: string);
    withContentType(contentType: string): CreateSignatureRequest;
    set contentType(contentType: string | undefined);
    get contentType(): string | undefined;
    withBody(body: SmsSignatureReq): CreateSignatureRequest;
}
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