userDeviceCreateRequest element
      
      Example XML
      <?xml version="1.0" encoding="UTF-8"?>
<userDeviceCreateRequest>
  <apiKey>...</apiKey>
  <authToken>...</authToken>
  <os>...</os>
  <canSendSms>...</canSendSms>
  <canReceiveCall>...</canReceiveCall>
  <canInitiateCall>...</canInitiateCall>
  <pushRegistrationId>...</pushRegistrationId>
  <force>...</force>
  <messageHistoryLimit>...</messageHistoryLimit>
  <pushConfig>...</pushConfig>
  <maxMmsSize>...</maxMmsSize>
</userDeviceCreateRequest>
      Example JSON
      {
  "os" : ...,
  "canSendSms" : false,
  "canReceiveCall" : false,
  "canInitiateCall" : false,
  "pushRegistrationId" : "...",
  "force" : false,
  "messageHistoryLimit" : ...,
  "pushConfig" : "...",
  "maxMmsSize" : ...,
  "authToken" : "...",
  "apiKey" : "..."
}