export function postMessage(slackConfig: any, appName: any, conversationId: any, { text, blocks, attachments }: {
    text: any;
    blocks: any;
    attachments: any;
}, options?: {}): Promise<any>;
export function verifySignatureHeader(slackConfig: any, appName: any, { "x-slack-signature": signature, "x-slack-request-timestamp": timestamp }: {
    "x-slack-signature": any;
    "x-slack-request-timestamp": any;
}, rawBody: any, options?: {}): boolean;