diff --git a/v2/acl/json.go b/v2/acl/json.go
index c80c165..fcbd335 100644
--- a/v2/acl/json.go
+++ b/v2/acl/json.go
@@ -134,3 +134,23 @@ func (l *TokenLifetime) UnmarshalJSON(data []byte) error {
 
 	return nil
 }
+
+func (bt *BearerTokenBody) MarshalJSON() ([]byte, error) {
+	return protojson.MarshalOptions{
+		EmitUnpopulated: true,
+	}.Marshal(
+		BearerTokenBodyToGRPCMessage(bt),
+	)
+}
+
+func (bt *BearerTokenBody) UnmarshalJSON(data []byte) error {
+	msg := new(acl.BearerToken_Body)
+
+	if err := protojson.Unmarshal(data, msg); err != nil {
+		return err
+	}
+
+	*bt = *BearerTokenBodyFromGRPCMessage(msg)
+
+	return nil
+}
diff --git a/v2/acl/json_test.go b/v2/acl/json_test.go
index b860d35..1962c1d 100644
--- a/v2/acl/json_test.go
+++ b/v2/acl/json_test.go
@@ -69,3 +69,15 @@ func TestTokenLifetimeJSON(t *testing.T) {
 
 	require.Equal(t, l, l2)
 }
+
+func TestBearerTokenBodyJSON(t *testing.T) {
+	b := generateBearerTokenBody("id")
+
+	data, err := b.MarshalJSON()
+	require.NoError(t, err)
+
+	b2 := new(acl.BearerTokenBody)
+	require.NoError(t, b2.UnmarshalJSON(data))
+
+	require.Equal(t, b, b2)
+}
diff --git a/v2/acl/marshal.go b/v2/acl/marshal.go
index 8ff9964..ac378cc 100644
--- a/v2/acl/marshal.go
+++ b/v2/acl/marshal.go
@@ -418,6 +418,17 @@ func (bt *BearerTokenBody) StableSize() (size int) {
 	return size
 }
 
+func (bt *BearerTokenBody) Unmarshal(data []byte) error {
+	m := new(acl.BearerToken_Body)
+	if err := proto.Unmarshal(data, m); err != nil {
+		return err
+	}
+
+	*bt = *BearerTokenBodyFromGRPCMessage(m)
+
+	return nil
+}
+
 func (bt *BearerToken) StableMarshal(buf []byte) ([]byte, error) {
 	if bt == nil {
 		return []byte{}, nil
diff --git a/v2/acl/marshal_test.go b/v2/acl/marshal_test.go
index f55834b..bb1ba98 100644
--- a/v2/acl/marshal_test.go
+++ b/v2/acl/marshal_test.go
@@ -212,16 +212,14 @@ func TestTokenLifetime_StableMarshal(t *testing.T) {
 
 func TestBearerTokenBody_StableMarshal(t *testing.T) {
 	bearerTokenBodyFrom := generateBearerTokenBody("Bearer Token Body")
-	transport := new(grpc.BearerToken_Body)
 
 	t.Run("non empty", func(t *testing.T) {
 		wire, err := bearerTokenBodyFrom.StableMarshal(nil)
 		require.NoError(t, err)
 
-		err = goproto.Unmarshal(wire, transport)
-		require.NoError(t, err)
+		bearerTokenBodyTo := new(acl.BearerTokenBody)
+		require.NoError(t, bearerTokenBodyTo.Unmarshal(wire))
 
-		bearerTokenBodyTo := acl.BearerTokenBodyFromGRPCMessage(transport)
 		require.Equal(t, bearerTokenBodyFrom, bearerTokenBodyTo)
 	})
 }