A request to RegisterDevice.
The unique ID for this identity.
A name-spaced GUID (for example, us-east-1:23EC4050-6AEA-7089-A2DD-08002EXAMPLE) created by Amazon Cognito. Here, the ID of the pool that the identity belongs to.
The SNS platform type (e.g. GCM, SDM, APNS, APNS_SANDBOX).
The push token.