I have an object that contains object and need to sort it by count

var obj={
  "error1":{
    "count":45,
    "ids":['123','352']
  },
  "error2":{
    "count":3,
    "ids":['13','2']
  },
  "error3":{
    "count":15,
    "ids":['42','7']
  }
}

I want to sort by count that the result would be

var obj={
   "error2":{
    "count":3,
    "ids":['13','2']
  },
   "error3":{
    "count":15,
    "ids":['42','7']
  },
  "error1":{
    "count":45,
    "ids":['123','352']
  }
}

How can I do that