{ "mediaObjectId" : "E7131716A001D1CDE053CAE7938C51C1", "mediaType" : "V", "mimetype" : "application/x-video", "background" : "//tile.loc.gov/storage-services/service/mbrs/ntscrm/01278132/01278132.jpg", "aspectRatio" : "4:3", "autoPlay" : false, "playerSize" : "mediumWide", "metadata" : [''], "expandAccessibility" : false }