public async Task <IReadOnlyList <IOperation> > GetTransfersInProgressAsync(string walletAddress)
        {
            if (string.IsNullOrEmpty(walletAddress))
            {
                throw new ArgumentNullException(nameof(walletAddress));
            }

            return(await _operationsRepository.GetByConditionAsync(x =>
                                                                   x.MasterWalletAddress == walletAddress &&
                                                                   x.Type == OperationType.TokensTransfer &&
                                                                   x.Status == OperationStatus.Accepted));
        }