simple esri point feature set

esri-point.json

{
  "displayFieldName": "",
  "geometryType": "esriGeometryPoint",
  "spatialReference": {
    "wkid": 26912,
    "latestWkid": 26912
  },
  "fields": [
    {
      "name": "OBJECTID",
      "type": "esriFieldTypeOID",
      "alias": "OBJECTID"
    }
  ],
  "features": [
    {
      "attributes": {
        "OBJECTID": 1
      },
      "geometry": {
        "x": 471966.36629999988,
        "y": 6291609.5373
      }
    }
  ]
}