MongoDB Enterprise replset:SECONDARY> db.adminCommand({ replSetHeartbeat: "replset", configVersion: 6, from: "192.168.2.100:27019", term: 3 })
{
	"ok" : 1,
	"state" : 2,
	"v" : 6,
	"configTerm" : 3,
	"set" : "replset",
	"syncingTo" : "192.168.2.13:27018",
	"term" : NumberLong(3),
	"primaryId" : NumberLong(1),
	"durableOpTime" : {
		"ts" : Timestamp(1642177853, 1),
		"t" : NumberLong(3)
	},
	"durableWallTime" : ISODate("2022-01-14T16:30:53.341Z"),
	"opTime" : {
		"ts" : Timestamp(1642177853, 1),
		"t" : NumberLong(3)
	},
        /** Something like this maybe **/
        "oldestOpTime" : {
		"ts" : Timestamp(1642177853, 1),
		"t" : NumberLong(3)
	},
        /**********************************/
	"wallTime" : ISODate("2022-01-14T16:30:53.341Z"),
	"electable" : true,
	"$clusterTime" : {
		"clusterTime" : Timestamp(1642177853, 1),
		"signature" : {
			"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
			"keyId" : NumberLong(0)
		}
	},
	"operationTime" : Timestamp(1642177853, 1)
}