{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "definitions": {
    "_id":              {
                          "maxLength": 64,
                          "minLength": 2,
                          "pattern": "^[0-9a-z.@_-]*$",
                          "title": "ID",
                          "type": "string"
                        },
    "firstname":        {
                          "maxLength": 64,
                          "minLength": 1,
                          "title": "First Name",
                          "type": "string"
                        },
    "lastname":         {
                          "maxLength": 64,
                          "minLength": 1,
                          "title": "Last Name",
                          "type": "string"
                        },
    "email":            {
                          "format": "email",
                          "title": "Email",
                          "type": "string"
                        },
    "avatars":          { "$ref": "avatars.json"},
    "avatar":           {
                          "format": "uri",
                          "title": "Avatar",
                          "type": "string"
                        },
    "root":             { "type": "boolean"},
    "disabled":         { "type": "boolean"},
    "preferences":      {
                          "title": "Preferences",
                          "type": "object"
                        },
    "api_key":{
      "type":"object",
      "properties":{
        "key":            {"type": "string"},
        "created":        {"$ref":"../definitions/created-modified.json#/definitions/created"},
        "last_used":      {}
      },
      "additionalProperties":false
    },
    "user-input":{
      "type":"object",
      "properties":{
        "_id":{"$ref":"#/definitions/_id"},
        "firstname":{"$ref":"#/definitions/firstname"},
        "lastname":{"$ref":"#/definitions/lastname"},
        "email":{"$ref":"#/definitions/email"},
        "avatar":{"$ref":"#/definitions/avatar"},
        "avatars":{"$ref":"#/definitions/avatars"},
        "root":{"$ref":"#/definitions/root"},
        "disabled":{"$ref":"#/definitions/disabled"},
        "preferences":{"$ref":"#/definitions/preferences"}
      },
      "additionalProperties":false
    },
    "user-output":{
      "type":"object",
      "properties":{
        "_id":{"$ref":"#/definitions/_id"},
        "firstname":{"$ref":"#/definitions/firstname"},
        "lastname":{"$ref":"#/definitions/lastname"},
        "email":{"$ref":"#/definitions/email"},
        "avatar":{"$ref":"#/definitions/avatar"},
        "avatars":{"$ref":"#/definitions/avatars"},
        "root":{"$ref":"#/definitions/root"},
        "disabled":{"$ref":"#/definitions/disabled"},
        "preferences":{"$ref":"#/definitions/preferences"},
        "created":{"$ref":"../definitions/created-modified.json#/definitions/created"},
        "modified":{"$ref":"../definitions/created-modified.json#/definitions/modified"}
      },
      "additionalProperties":false
    }
  }
}