anchor.diff:  In case a player joins the match, the following event will be received by other players:
   
       {
  +        "type": "match.join",
           "event": {
               "_id": "548866edba0ec600005e1941",
               "match_id": "548866ed74c2e0000098db95",
  
positive.code:                 }
              ]
          },
          "id": "5007fd0a-1365-4e87-aba8-5d916731e684",
          "type": "match.leave"
      }
  
  In case the match is marked as finished, the following event will be broadcasted to all players except the one who initiated it.
  
negative.code:             "match_id": "54784d07f10c190000cb96e3"
          },
          "id": "d2f908d1-40d8-4f73-802e-fe0086bb6cd5"
      }
  
  In case an element was drawn from the shoe, an event like this is fired:
  
      {
          "type": "match.shoedraw",
          "event": {
              "_id": "5492a7c7a6725f0000b59e4f",
              "count": 2,
              "match_id": "5492a7c6a6725f0000b59e46"
          },
          "id": "5e4e82c1-d728-4a4b-be40-e4abec320440"
      }
  
  Events are broadcasted in other situations, such as moves, but they are described within the related call documentation.
  