How to retrieve the users who all are has a read permission to the space or page?

How to retrieve the users who all are has a read permission to the space or page?

I tried “wiki/rest/api/space?expand=permissions” rest API but it wasn’t given to the specific space.

And also how to retrieve the details of “read” operation only.

{
		"id": 164301,
		"subjects": {
			"group": {
				"results": [{
					"type": "group",
					"name": "confluence-administrators",
					"id": "***",
					"_links": {
						"self": "https://***.atlassian.net/wiki/rest/experimental/group/confluence-administrators"
					}
				}],
				"size": 1
			},
			"_expandable": {
				"user": ""
			}
		},
		"operation": {
			"operation": "create",
			"targetType": "blogpost"
		},
		"anonymousAccess": false,
		"unlicensedAccess": false
	}, {
		"id": 164278,
		"subjects": {
			"group": {
				"results": [{
					"type": "group",
					"name": "confluence-administrators",
					"id": "***",
					"_links": {
						"self": "https://***.atlassian.net/wiki/rest/experimental/group/confluence-administrators"
					}
				}],
				"size": 1
			},
			"_expandable": {
				"user": ""
			}
		},
		"operation": {
			"operation": "delete",
			"targetType": "attachment"
		},
		"anonymousAccess": false,
		"unlicensedAccess": false
	},{
		"id": 164105,
		"subjects": {
			"group": {
				"results": [{
					"type": "group",
					"name": "confluence-administrators",
					"id": "23d0a021-6a47-46c9-8bcb-d8523e7303a3",
					"_links": {
						"self": "https://rq-dev.atlassian.net/wiki/rest/experimental/group/confluence-administrators"
					}
				}],
				"size": 1
			},
			"_expandable": {
				"user": ""
			}
		},
		"operation": {
			"operation": "read",
			"targetType": "space"
		},
		"anonymousAccess": false,
		"unlicensedAccess": false
	}