src/test/resources/users.json

{
  "jcr:primaryType":"nt:unstructured",
  "name":"root",
  "users":"[user1,user2]",
  "user1" : {
    "jcr:primaryType":"nt:unstructured",
    "name":"user1",
    "type":"user"
  },
  "user2" : {
    "jcr:primaryType":"nt:unstructured",
    "name":"user2",
    "type":"user"
  }
}