diff --git a/types.go b/types.go
index c1fe57b..0e35cbe 100644
--- a/types.go
+++ b/types.go
@@ -4,6 +4,12 @@ import (
 	eos "github.com/eoscanada/eos-go"
 )
 
+type HearthBeat struct {
+	BlockNum                 uint32 `json:"blocknum"`
+	HeadBlockNum             uint32 `json:"head_blocknum"`
+	LastIrreversibleBlockNum uint32 `json:"last_irreversible_blocknum"`
+}
+
 type ActionTrace struct {
 	TxID     eos.Checksum256 `json:"tx_id"`
 	Receiver eos.Name        `json:"receiver"`