{
       "variants" : ["c3f0a94f-48de-4b77-a08e-68114460857e", "444939cd-ae63-4ce1-96a4-de74b77e3737" ....],
       "alias" : ["user@account.com", "someone@aerogear.org", ....],
       "categories" : ["someCategory", "otherCategory"],
       "deviceType" : ["iPad", "AndroidTablet"],
       "ttl" : 3600,
       "message": {
         "alert":"HELLO!",
         "sound":"default",
         "badge":7,
         "content-available" : true,
         "action-category" : "some_category",
         "simple-push": "version=123",
         "data" : {
             "someKey":"some value",
             "anotherCustomKey":"some other value"
            }
       }
}