Watcher alert not functioning with Time range for no activity

i am looking to create a watcher alert where i am alerted if there is no activity or logs for a service with in a time range . i have tried my bit but ending up with errors . here is the code for watcher alert

{
  "trigger": {
    "schedule": {
      "interval": "2m"
    }
  },
  "input": {
    "search": {
      "request": {
        "search_type": "query_then_fetch",
        "indices": [
          "tibco*"
        ],
        "types": [],
        "body": {
          "size": 0,
          "query": {
            "filter": [
              {
                "range": {
                  "@timestamp": {
                    "gte": "now-30m",
                    "lt": "now"
                  }
                }
              },
              {
                "query_string": {
                  "default_field": "EnterpriseLogMessage.EnterpriseLoggingData.0.ServiceName",
                  "query": "DataAcess-ProcessCRMData"
                }
              }
            ]
          }
        }
      }
    }
  },
  "condition": {
    "compare": {
      "ctx.payload.hits.total": {
        "lt": 1
      }
    }
  },
  "actions": {
    "notify-evanios-down": {
      "webhook": {
        "scheme": "http",
        "host": "10.3.52.14",
        "port": 5023,
        "method": "post",
        "path": "/eventlistener/createEvent",
        "params": {},
        "headers": {
          "Content-Type": "text/xml"
        },
        "body": "<?xml version=\"1.0\" encoding=\"UTF-8\"?> <events> <passkey>kibana</passkey> <event> <u_event_type>u_event</u_event_type> <u_severity>1</u_severity> <u_objectname>This is a test alert.</u_objectname> <u_application>Horizon</u_application> <u_description>This is a test alert.</u_description> <u_extrastr2>This is a test alert.</u_extrastr2> <u_message>This is a test alert. Escalate to satishkumar.baratam@asurion.com.</u_message> </event> </events>"
      }
    }
  }
}

Part of the output when simulating the watch, with the range as configured above is the following:
"input": {
"type": "search",
"status": "failure",
"error": {
"root_cause": [
{
"type": "parsing_exception",
"reason": "[filter] query malformed, no start_object after query name",
"line": 1,
"col": 29
}
],
"type": "parsing_exception",
"reason": "[filter] query malformed, no start_object after query name",
"line": 1,
"col": 29
},

try your query with a regular _search operation and you will see it will fail as well. Instead of having a filter array, you need to wrap that one into a bool query, that contains your filter array.

Hope that helps.