{
  "objectIdFieldName" : "FID", 
  "uniqueIdField" : 
  {
    "name" : "FID", 
    "isSystemMaintained" : true
  }, 
  "globalIdFieldName" : "", 
  "fields" : [
    {
      "name" : "object_id", 
      "type" : "esriFieldTypeInteger", 
      "alias" : "object_id", 
      "sqlType" : "sqlTypeInteger", 
      "domain" : null, 
      "defaultValue" : null
    }, 
    {
      "name" : "timestamp_txt", 
      "type" : "esriFieldTypeString", 
      "alias" : "timestamp_txt", 
      "sqlType" : "sqlTypeNVarchar", 
      "length" : 256, 
      "domain" : null, 
      "defaultValue" : null
    }, 
    {
      "name" : "timestamp_num", 
      "type" : "esriFieldTypeDate", 
      "alias" : "timestamp_num", 
      "sqlType" : "sqlTypeTimestamp2", 
      "length" : 8, 
      "domain" : null, 
      "defaultValue" : null
    }, 
    {
      "name" : "timezone", 
      "type" : "esriFieldTypeString", 
      "alias" : "timezone", 
      "sqlType" : "sqlTypeNVarchar", 
      "length" : 256, 
      "domain" : null, 
      "defaultValue" : null
    }, 
    {
      "name" : "FID", 
      "type" : "esriFieldTypeOID", 
      "alias" : "FID", 
      "sqlType" : "sqlTypeInteger", 
      "domain" : null, 
      "defaultValue" : null
    }
  ], 
  "features" : [
    {
      "attributes" : {
        "object_id" : 1, 
        "timestamp_txt" : "31 December 9999, 00:00 AM CEST", 
        "timestamp_num" : 1618998660000, 
        "timezone" : "CET", 
        "FID" : 1
      }
    }
  ]
}