[
   {
      "event":"reject",
      "msg":{
         "ts":1365109999,
         "subject":"This an example webhook message",
         "email":"example.webhook@mandrillapp.com",
         "sender":"example.sender@mandrillapp.com",
         "tags":[
            "webhook-example"
         ],
         "opens":[

         ],
         "clicks":[

         ],
         "state":"rejected",
         "metadata":{
            "user_id":111
         },
         "_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa",
         "_version":"exampleaaaaaaaaaaaaaaa"
      },
      "_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa",
      "ts":1418683246
   },
   {
      "event":"reject",
      "msg":{
         "ts":1365109999,
         "subject":"This an example webhook message",
         "email":"example.webhook@mandrillapp.com",
         "sender":"example.sender@mandrillapp.com",
         "tags":[
            "webhook-example"
         ],
         "opens":[

         ],
         "clicks":[

         ],
         "state":"rejected",
         "metadata":{
            "user_id":111
         },
         "_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa1",
         "_version":"exampleaaaaaaaaaaaaaaa"
      },
      "_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa1",
      "ts":1418683246
   }
]