6.1 artifact Object

 {
         "description" : "artifact object",
         "type" : "object",
         "properties" :
         {
             "id": 
             {
                   "type":"array",
                   "optional":false,
                   "items" : { "type" : "integer", "minimum": 0, "maximum":255}
             },
             "clientId": {"type":"string", "optional":false},
             "redirectUri": {"type":"string", "optional":false},
             "relyingPartyIdentifier": {"type":"string", "optional":false},
             "data": {"type":"string", "optional":false}
         }
 }