{
  "allOrNone": false,
  "compositeRequest": [
    {
      "method": "GET",
      "url": "/services/data/v41.0/ui-api/object-info/Opportunity",
      "referenceId": "opp"
    }
  ]
}

{
  "compositeResponse" : [ {
    "body" : [ {
      "errorCode" : "NOT_FOUND",
      "message" : "The requested resource does not exist"
    } ],
    "httpHeaders" : { },
    "httpStatusCode" : 404,
    "referenceId" : "opp"
  } ]
}