{
  "type": "object",
  "required": ["global_activities"],
  "properties": {
     "global_activities": {
       "type": "object",
       "required": ["activities", "more", "currentPage"],
       "properties": {
         "more": { "type": "boolean" },
         "currentPage": { "type": "integer" },
         "activities": {
           "type": "array",
           "items":{
             "required": ["id", "message", "createdAt", "timezone"],
             "properties": {
               "id": { "type": "integer" },
               "message": { "type": "string" },
               "createdAt": { "type": "string" },
               "timezone": { "type": "string" }
             }
           }
         }
       }
     }
   }
}