Retrieve an alert with specific ID

Example response

{
  "schedule": {
    "frequencyType": "daily,day,days,weekday,weekdays,hour,hourly,hours,minute,minutes,minutely,week,weeks,weekly,month,months,monthly"
  },
  "properties": {
    "alertContentFilters": [
      {
        "operator": "=,!=,>,>=,<,<=,Equals,Not Equals,Greater than,Greater than or equals,Less than,Less than or equals,is null,is not null,Range,Contains,Does Not Contain",
        "controlType": "single,picker,slider,range_time_slider",
        "plainControlType": "single,multiple,tree,custom"
      }
    ]
  }
}