[
   {
      "code":"/32246135/mm-billboard",
      "mediaTypes":{
         "banner":{
            "sizes":[
               [
                  970,
                  250
               ],
               [
                  320,
                  100
               ]
            ]
         }
      },
      "bids":[
         {
            "bidder":"teads",
            "params":{
               "placementId":12345,
               "pageId":1234
            }
         },
         // [...] other bids
      ]
   }
]