user.json

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "User",
  "type": "object",
  "properties": {
    "_id":              {"type": "string"},
    "created":          {"type": "string", "format": "date-time"},
    "modified":         {"type": "string", "format": "date-time"},
    "firstname":        { "type": "string" },
    "lastname":         { "type": "string" },
    "email":            { "type": "string", "format": "email" },
    "avatar":           { "type": "string", "format": "uri" },
    "wheel":            { "type": "boolean"},
    "root":             { "type": "boolean"}
  },
  "additionalProperties": false,
  "required":["_id", "firstname", "lastname", "created", "modified", "wheel", "root"]
}