How to parse strings of json object seperated by comma but not enclosed by array

In the below sample elasticsearch doument created by the alerting rule, contains 3 comma seperated string of json objects under hits but they are NOT contained in an array [], so in Go unable to parse them.

Can someone help me parse the hits documents

[map[_id:2s3kfXoB2vuM1J-EwpE7 _index:alert-X _score:%!s(float64=1) 
	 _source:
	 	map[@timestamp:2021-07-06T22:16:21.818Z 
			alert_name:alert events login 
			hits:
				{"_index":".ds-logs-events-2021.06.30-000005","_type":"_doc","_id":"S83kfXoB2vuM1J-Eo4_v", ... 
				{"_index":".ds-logs-events-2021.06.30-000005","_type":"_doc","_id":"Ss3kfXoB2vuM1J-Eo4_v",...
				{"_index":".ds-logs-events-2021.06.30-000005","_type":"_doc","_id":"N83kfXoB2vuM1J-EiI2l",...
			rule_id:cfb85000-db0e-11eb-83e0-bb11d01642c7 
			] 

Model

type Alert struct {
	Alert  string   `json:"alert_name"`
	Hits   []*Event `json:"hits"`
}

type Event struct {
	Model  string
	Action string
}

Following offical example
Using official go-elasticsearch and easyjson

Concatenated the json string with the array block and was able to Unmarshal it

		hitsArray := "[" + alert.Source.Hits + "]"
		var hits []model.AlertHits
		json.Unmarshal([]byte(hitsArray), &hits)
		for _, hit := range hits {
			log.Printf("hit %s action %s", hit.ID, hit.Source.Message.Action)
		}

model.go

type AlertHits struct {
	ID     string `json:"_id"`
	Source Event  `json:"_source"`
}

type Event struct {
	Message Message `json:"message"`
}

type Message struct {
	Action string `json:"action"`
	Model  string `json:"model"`
}