<ApiRequest xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <ApiKey>xxxxxxxxxxx</ApiKey>
  <Data xsi:type="Subscriber">
    <Mode>AddAndUpdate</Mode>
    <Force>true</Force>
    <ListId>16</ListId>
    <Email>abc@gmail.com</Email>
    <Firstname>abc</Firstname>
    <Lastname>cdf</Lastname>
  </Data>
</ApiRequest>

<ApiRequest xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <ApiKey>xxxxxxxxxxx
  <Data xsi:type="Subscriber">
  <Mode>AddAndUpdate
  <Force>true
  <ListId>16
  <Email>abc@gmail.com
  <Firstname>abc
  <Lastname>cdf