{ 
  "slots": 
   [
     { "id": 1, "time": "09:00", "message": "Opening" },     
     { "id": 2, "time": "09:20"},      
     { "id": 3, "time": "10:00"},      
     { "id": 4, "time": "10:40", "message": "Break" },     
     { "id": 5, "time": "11:00"},      
     { "id": 6, "time": "11:40"},      
     { "id": 7, "time": "12:20", "message": "Lunch" }     
   ],    
  "sessions": 
   [
        { "id": 1, "title": "A great session", "timeId": 2,
          "description": "...", "speaker": "...", "room": "..." }
   ] 
}