export declare class LogService {
    private static instance;
    private MongoClient;
    private MongoDB;
    private constructor();
    saveMessage(message: any, bot_address: string): Promise<void>;
    saveAccount(account: any): Promise<void>;
    findAccount(accountAddress: string): Promise<any>;
    getAllThreadsFromAccount(accountAddress: string): Promise<any>;
    getThread(accountAddress: string, parentMessageId: string): Promise<any>;
    static getInstance(): LogService;
    private getParentId(references);
}