Added missing message type in serializer
Added missing message type in serializer

pculture/unisubs,wevoice/wesub,ReachingOut/unisubs,pculture/unisubs,ofer43211/unisubs,wevoice/wesub,wevoice/wesub,ofer43211/unisubs,wevoice/wesub,pculture/unisubs,ReachingOut/unisubs,ReachingOut/unisubs,pculture/unisubs,ReachingOut/unisubs,ofer43211/unisubs,ofer43211/unisubs