Extracting hostname from Postman response

Hello,
I’m new on Postman, I search a response but i can’t find

I just would like by a GET to have only in my response the object “hostname” so 2 values in my exemple

{
    "entries": [
        {
            "values": {
                "Request ID": "000000000000001",
                "Submitter": "dm",
                "Create Date": "2020-04-22T09:45:08.000+0000",
                "Assigned To": null,
                "Last Modified By": "dmarcil",
                "Modified Date": "2020-04-22T09:45:08.000+0000",
                "Status": "New",
                "Short Description": "test",
                "Status History": {
                    "New": {
                        "user": "dmarcil",
                        "timestamp": "2020-04-22T09:45:09.000+0000"
                    }
                },
                "projectName": null,
                "vmUid": null,
                "totalDiskSize": null,
                "owner": null,
                "osVersion": null,
                "machineType": null,
                "applicationCode": null,
                "environment": null,
                "hostname": test88,
                "subEnvironnment": null,
                "requestNumber": "test1",
                "vmState": null,
                "nbDisk": null,
                "deployment": null,
                "component": null,
                "application": null,
                "priority": null,
                "agentInstalled": null,
                "trustLevel": null,
                "serviceCatalog": null,
                "oob2IP": null,
                "securityTag": null,
                "zone": null,
                "prodIP": null,
                "osType": null,
                "tsmIP": null,
                "applicationPort": null,
                "vmId": null,
                "applicationVersion": null,
                "vmwareCluster": null,
                "dbCharset": null,
                "cloudService": null,
                "dbInstance": null,
                "dbName": null,
                "dbCollation": null,
                "site": null,
                "datastore": null,
                "blueprintName": null,
                "vCenter": null,
                "securityGroup": null,
                "vipIP": null,
                "vipName": null,
                "vmDirectory": null,
                "affinityRules": null,
                "plateform": null,
                "nsxlbHA": null,
                "vmTemplate": null,
                "wafTunnels": null,
                "wafAliasBackEnd": null,
                "wafAliasFrontEnd": null,
                "reservationvRA": null,
                "storagePolicyvRA": null,
                "businessGroupvRA": null,
                "nbWafTunnels": null,
                "edgeSizing": null,
                "edgeId": null,
                "leaseDays": null,
                "vmCreationDate": null,
                "ipsetName": null,
                "archiveDays": null,
                "dvPortgroup": null,
                "suffixDNS": null
            },
            "_links": {
                "self": [
                    {
                        "href": "https://"
                    }
                ]
            }
        },
        {
            "values": {
                "Request ID": "000000000000002",
                "Submitter": "CLOUD",
                "Create Date": "2020-04-22T10:41:52.000+0000",
                "Assigned To": null,
                "Last Modified By": "dmarcil",
                "Modified Date": "2020-04-22T10:41:52.000+0000",
                "Status": "New",
                "Short Description": "InventaireMatCLOUD",
                "Status History": {
                    "New": {
                        "user": "dmarcil",
                        "timestamp": "2020-04-22T10:41:52.000+0000"
                    }
                },
                "projectName": null,
                "vmUid": null,
                "totalDiskSize": null,
                "owner": null,
                "osVersion": null,
                "machineType": null,
                "applicationCode": null,
                "environment": null,
                "hostname": test55,
                "subEnvironnment": null,
                "requestNumber": "test01",
                "vmState": null,
                "nbDisk": null,
                "deployment": null,
                "component": null,
                "application": null,
                "priority": null,
                "agentInstalled": null,
                "trustLevel": null,
                "serviceCatalog": null,
                "oob2IP": null,
                "securityTag": null,
                "zone": null,
                "prodIP": null,
                "osType": null,
                "tsmIP": null,
                "applicationPort": null,
                "vmId": null,
                "applicationVersion": null,
                "vmwareCluster": null,
                "dbCharset": null,
                "cloudService": null,
                "dbInstance": null,
                "dbName": null,
                "dbCollation": null,
                "site": null,
                "datastore": null,
                "blueprintName": null,
                "vCenter": null,
                "securityGroup": null,
                "vipIP": null,
                "vipName": null,
                "vmDirectory": null,
                "affinityRules": null,
                "plateform": null,
                "nsxlbHA": null,
                "vmTemplate": null,
                "wafTunnels": null,
                "wafAliasBackEnd": null,
                "wafAliasFrontEnd": null,
                "reservationvRA": null,
                "storagePolicyvRA": null,
                "businessGroupvRA": null,
                "nbWafTunnels": null,
                "edgeSizing": null,
                "edgeId": null,
                "leaseDays": null,
                "vmCreationDate": null,
                "ipsetName": null,
                "archiveDays": null,
                "dvPortgroup": null,
                "suffixDNS": null
            },

Please help
Thanks you
David