How to use the @mojaloop/central-services-stream/src/kafka/protocol.encodePayload function in @mojaloop/central-services-stream

while ((doc = await streamReader.readAsync()) !== null) {
          let individualTransfer = doc.payload
          individualTransfer.payerFsp = payload.payerFsp
          individualTransfer.payeeFsp = payload.payeeFsp
          individualTransfer.amount = individualTransfer.transferAmount
          delete individualTransfer.transferAmount
          individualTransfer.expiration = payload.expiration
          const bulkTransferAssociationRecord = {
            transferId: individualTransfer.transferId,
            bulkTransferId: payload.bulkTransferId,
            bulkProcessingStateId: Enum.BulkProcessingState.RECEIVED
          }
          await BulkTransferService.bulkTransferAssociationCreate(bulkTransferAssociationRecord)

          let dataUri = encodePayload(JSON.stringify(individualTransfer), headers['content-type'])
          let msg = Object.assign({}, prepareHandlerMessageProtocol)
          msg.value.id = messageId
          msg.value.from = payload.payerFsp
          msg.value.to = payload.payeeFsp
          msg.value.content.headers = headers
          msg.value.content.payload = dataUri
          msg.value.metadata.event.id = message.value.metadata.event.id
          msg.value.metadata.event.createdAt = new Date()

          params = { message: msg, kafkaTopic, consumer }
          const producer = { functionality: TransferEventType.PREPARE, action: TransferEventAction.BULK_PREPARE }
          await Util.proceed(params, { consumerCommit, histTimerEnd, producer })
        }
      } catch (err) { // TODO: handle individual transfers streaming error
        Logger.info(Util.breadcrumb(location, `callbackErrorInternal2--${actionLetter}6`))
        Logger.info(Util.breadcrumb(location, `notImplemented`))