public async Task <IActionResult> Post(string clientId, string key, [FromBody] SetRequestModel model)
        {
            if (!_inputValidator.IsValidClientId(clientId))
            {
                return(BadRequest(ResponseModel.CreateWithError(ErrorType.Validation, InvalidClientIdMessage)));
            }

            if (!_inputValidator.IsValidKey(key))
            {
                return(BadRequest(ResponseModel.CreateWithError(ErrorType.Validation, InvalidKeyMessage)));
            }

            if (!_inputValidator.IsValidPayload(model.Data))
            {
                return(BadRequest(ResponseModel.CreateWithError(ErrorType.Validation, InvalidPayloadMessage)));
            }

            if (!_inputValidator.IsValidPayloadSize(model.Data))
            {
                return(BadRequest(ResponseModel.CreateWithError(ErrorType.Validation, TooBigPayloadMessage)));
            }

            await _clientDictionary.SetAsync(clientId, key, model.Data);

            return(Ok(ResponseModel.CreateWithData(null)));
        }