diff --git a/cmd/neofs-rest-gw/integration_test.go b/cmd/neofs-rest-gw/integration_test.go
index 17369ac..83c971a 100644
--- a/cmd/neofs-rest-gw/integration_test.go
+++ b/cmd/neofs-rest-gw/integration_test.go
@@ -924,11 +924,13 @@ func signToken(t *testing.T, key *keys.PrivateKey, data []byte) *handlers.Bearer
 }
 
 func signTokenWalletConnect(t *testing.T, key *keys.PrivateKey, data []byte) *handlers.BearerToken {
-	sm, err := walletconnect.SignMessage(&key.PrivateKey, data[:])
+	b64Token := make([]byte, base64.StdEncoding.EncodedLen(len(data)))
+	base64.StdEncoding.Encode(b64Token, data)
+	sm, err := walletconnect.SignMessage(&key.PrivateKey, b64Token[:])
 	require.NoError(t, err)
 
 	return &handlers.BearerToken{
-		Token:     base64.StdEncoding.EncodeToString(data),
+		Token:     string(b64Token),
 		Signature: hex.EncodeToString(append(sm.Data, sm.Salt...)),
 		Key:       hex.EncodeToString(key.PublicKey().Bytes()),
 	}
diff --git a/handlers/container_test.go b/handlers/container_test.go
index 5ebe0e7..79e908b 100644
--- a/handlers/container_test.go
+++ b/handlers/container_test.go
@@ -3,6 +3,7 @@ package handlers
 import (
 	"testing"
 
+	sessionv2 "github.com/nspcc-dev/neofs-api-go/v2/session"
 	"github.com/stretchr/testify/require"
 )
 
@@ -35,3 +36,17 @@ func TestCheckContainerName(t *testing.T) {
 		}
 	}
 }
+
+func TestPrepareSessionToken(t *testing.T) {
+	st := &SessionToken{
+		BearerToken: BearerToken{
+			Token:     "ChASxCTiXwREjLAG7nkxjDHVEhsKGTVxfQ56a0uQeFmOO63mqykBS1HNpw1rxSgaBgjIAhjkASIhAnLj82Qmdlcg7JtoyhDjJ1OsRFjtmxdXbzrwVkwxWAdWMgQIAxAB",
+			Signature: "2ebdc1f2fea2bba397d1be6f982a6fe1b2bc9f46a348b700108fe2eba4e6531a1bb585febf9a40a3fa2e085fca5e2a75ca57f61166117c6d3e04a95ef9a2d2196f52648546784853e17c0b7ba762eae1",
+			Key:       "03bd9108c0b49f657e9eee50d1399022bd1e436118e5b7529a1b7cd606652f578f",
+		},
+		Verb: sessionv2.ContainerVerbSetEACL,
+	}
+
+	_, err := prepareSessionToken(st, true)
+	require.NoError(t, err)
+}
diff --git a/handlers/containers.go b/handlers/containers.go
index 69cabe0..8d57a89 100644
--- a/handlers/containers.go
+++ b/handlers/containers.go
@@ -423,7 +423,7 @@ func prepareSessionToken(st *SessionToken, isWalletConnect bool) (*session.Token
 	stoken.ToV2().SetSignature(v2signature)
 
 	if isWalletConnect {
-		if !walletconnect.Verify((*ecdsa.PublicKey)(ownerKey), data, signature) {
+		if !walletconnect.Verify((*ecdsa.PublicKey)(ownerKey), []byte(st.Token), signature) {
 			return nil, fmt.Errorf("invalid signature")
 		}
 	} else if !stoken.VerifySignature() {
diff --git a/handlers/objects.go b/handlers/objects.go
index 49a7296..ebdae9b 100644
--- a/handlers/objects.go
+++ b/handlers/objects.go
@@ -370,7 +370,7 @@ func prepareBearerToken(bt *BearerToken, isWalletConnect bool) (*token.BearerTok
 	btoken.ToV2().SetSignature(v2signature)
 
 	if isWalletConnect {
-		if !walletconnect.Verify((*ecdsa.PublicKey)(ownerKey), data, signature) {
+		if !walletconnect.Verify((*ecdsa.PublicKey)(ownerKey), []byte(bt.Token), signature) {
 			return nil, fmt.Errorf("invalid signature")
 		}
 	} else if err = btoken.VerifySignature(); err != nil {