{
  "UserInfo": [
  {
   "firstname" : "TestUser001",
   "lastname" : "User001",
   "password" : "TestUser001",
   "email" : "TestUser001@onlab.us",
   "site": "http://localhost:8000/api/core/sites/1/"
   },
  {
   "firstname" : "TestUser002",
   "lastname" : "User002",
   "password" : "TestUser002",
   "email" : "TestUser002@onlab.us",
   "site": "http://localhost:8000/api/core/sites/1/"
   },
  {
   "firstname" : "TestUser003",
   "lastname" : "User003",
   "password" : "TestUser003",
   "email" : "TestUser003@onlab.us",
   "site": "http://localhost:8000/api/core/sites/1/"
   }
 ]
}