diff --git a/Readme.md b/Readme.md
index dad75f5..3bbe2eb 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,6 +1,6 @@
 # TON SDK client Golang
 
-[![EVER-SDK](https://img.shields.io/badge/EVER_SDK-1.39.0-green.svg)](https://github.com/tonlabs/EVER-SDK/tree/1.39.0)
+[![EVER-SDK](https://img.shields.io/badge/EVER_SDK-1.40.0-green.svg)](https://github.com/tonlabs/EVER-SDK/tree/1.40.0)
 [![TON local-node docker image](https://img.shields.io/badge/TON_local_node-0.33.0-green.svg)](https://hub.docker.com/layers/local-node/tonlabs/local-node/0.33.0/images/sha256-40a544432089f2d730f3dd0542fcb59bef6c5192b5d374fdae3a7ea6417070c4)
 [![Chat Telegram](https://img.shields.io/badge/chat-Telegram-9cf.svg)](https://t.me/RADIANCE_EVER_SDK)
 [![Documentation](https://godoc.org/github.com/radianceteam/everscale-client-go/client?status.svg)](https://godoc.org/github.com/radianceteam/everscale-client-go/client)
diff --git a/api-spec.json b/api-spec.json
index d717e2c..a46c1a6 100644
--- a/api-spec.json
+++ b/api-spec.json
@@ -1,5 +1,5 @@
 {
-  "version": "1.39.0",
+  "version": "1.40.0",
   "modules": [
     {
       "name": "client",
@@ -254,6 +254,13 @@
               "value": "35",
               "summary": null,
               "description": null
+            },
+            {
+              "name": "InvalidData",
+              "type": "Number",
+              "value": "36",
+              "summary": null,
+              "description": null
             }
           ],
           "summary": null,
@@ -7126,6 +7133,47 @@
           ],
           "summary": null,
           "description": null
+        },
+        {
+          "name": "ParamsOfGetSignatureData",
+          "type": "Struct",
+          "struct_fields": [
+            {
+              "name": "abi",
+              "type": "Ref",
+              "ref_name": "abi.Abi",
+              "summary": "Contract ABI used to decode.",
+              "description": null
+            },
+            {
+              "name": "message",
+              "type": "String",
+              "summary": "Message BOC encoded in `base64`.",
+              "description": null
+            }
+          ],
+          "summary": null,
+          "description": null
+        },
+        {
+          "name": "ResultOfGetSignatureData",
+          "type": "Struct",
+          "struct_fields": [
+            {
+              "name": "signature",
+              "type": "String",
+              "summary": "Signature from the message in `hex`.",
+              "description": null
+            },
+            {
+              "name": "hash",
+              "type": "String",
+              "summary": "Hash to verify the signature in `base64`.",
+              "description": null
+            }
+          ],
+          "summary": null,
+          "description": null
         }
       ],
       "functions": [
@@ -7698,6 +7746,44 @@
             ]
           },
           "errors": null
+        },
+        {
+          "name": "get_signature_data",
+          "summary": "Extracts signature from message body and calculates hash to verify the signature",
+          "description": null,
+          "params": [
+            {
+              "name": "context",
+              "type": "Generic",
+              "generic_name": "Arc",
+              "generic_args": [
+                {
+                  "type": "Ref",
+                  "ref_name": "ClientContext"
+                }
+              ],
+              "summary": null,
+              "description": null
+            },
+            {
+              "name": "params",
+              "type": "Ref",
+              "ref_name": "abi.ParamsOfGetSignatureData",
+              "summary": null,
+              "description": null
+            }
+          ],
+          "result": {
+            "type": "Generic",
+            "generic_name": "ClientResult",
+            "generic_args": [
+              {
+                "type": "Ref",
+                "ref_name": "abi.ResultOfGetSignatureData"
+              }
+            ]
+          },
+          "errors": null
         }
       ]
     },
diff --git a/client/mod_abi.gen.go b/client/mod_abi.gen.go
index 8e02e75..e6ccbff 100644
--- a/client/mod_abi.gen.go
+++ b/client/mod_abi.gen.go
@@ -1,6 +1,6 @@
 package client
 
-// DON'T EDIT THIS FILE! It is generated via 'task generate' at 09 Dec 22 11:48 UTC
+// DON'T EDIT THIS FILE! It is generated via 'task generate' at 28 Jan 23 13:55 UTC
 //
 // Mod abi
 //
@@ -782,6 +782,20 @@ type ResultOfCalcFunctionId struct {
 	FunctionID uint32 `json:"function_id"`
 }
 
+type ParamsOfGetSignatureData struct {
+	// Contract ABI used to decode.
+	Abi Abi `json:"abi"`
+	// Message BOC encoded in `base64`.
+	Message string `json:"message"`
+}
+
+type ResultOfGetSignatureData struct {
+	// Signature from the message in `hex`.
+	Signature string `json:"signature"`
+	// Hash to verify the signature in `base64`.
+	Hash string `json:"hash"`
+}
+
 // Encodes message body according to ABI function call.
 func (c *Client) AbiEncodeMessageBody(p *ParamsOfEncodeMessageBody) (*ResultOfEncodeMessageBody, error) {
 	result := new(ResultOfEncodeMessageBody)
@@ -979,3 +993,12 @@ func (c *Client) AbiCalcFunctionId(p *ParamsOfCalcFunctionId) (*ResultOfCalcFunc
 
 	return result, err
 }
+
+// Extracts signature from message body and calculates hash to verify the signature.
+func (c *Client) AbiGetSignatureData(p *ParamsOfGetSignatureData) (*ResultOfGetSignatureData, error) {
+	result := new(ResultOfGetSignatureData)
+
+	err := c.dllClient.waitErrorOrResultUnmarshal("abi.get_signature_data", p, result)
+
+	return result, err
+}
diff --git a/client/mod_boc.gen.go b/client/mod_boc.gen.go
index 154e8b4..4b4e0cc 100644
--- a/client/mod_boc.gen.go
+++ b/client/mod_boc.gen.go
@@ -1,6 +1,6 @@
 package client
 
-// DON'T EDIT THIS FILE! It is generated via 'task generate' at 09 Dec 22 11:48 UTC
+// DON'T EDIT THIS FILE! It is generated via 'task generate' at 28 Jan 23 13:55 UTC
 //
 // Mod boc
 //
diff --git a/client/mod_client.gen.go b/client/mod_client.gen.go
index cea7c37..ffe95cb 100644
--- a/client/mod_client.gen.go
+++ b/client/mod_client.gen.go
@@ -1,6 +1,6 @@
 package client
 
-// DON'T EDIT THIS FILE! It is generated via 'task generate' at 09 Dec 22 11:48 UTC
+// DON'T EDIT THIS FILE! It is generated via 'task generate' at 28 Jan 23 13:55 UTC
 //
 // Mod client
 //
@@ -49,6 +49,7 @@ const (
 	InternalErrorErrorCode                       = 33
 	InvalidHandleErrorCode                       = 34
 	LocalStorageErrorErrorCode                   = 35
+	InvalidDataErrorCode                         = 36
 )
 
 func init() { // nolint gochecknoinits
@@ -87,6 +88,7 @@ func init() { // nolint gochecknoinits
 	errorCodesToErrorTypes[InternalErrorErrorCode] = "InternalErrorErrorCode"
 	errorCodesToErrorTypes[InvalidHandleErrorCode] = "InvalidHandleErrorCode"
 	errorCodesToErrorTypes[LocalStorageErrorErrorCode] = "LocalStorageErrorErrorCode"
+	errorCodesToErrorTypes[InvalidDataErrorCode] = "InvalidDataErrorCode"
 }
 
 type Error struct {
diff --git a/client/mod_crypto.gen.go b/client/mod_crypto.gen.go
index 653695a..a3d0aee 100644
--- a/client/mod_crypto.gen.go
+++ b/client/mod_crypto.gen.go
@@ -1,6 +1,6 @@
 package client
 
-// DON'T EDIT THIS FILE! It is generated via 'task generate' at 09 Dec 22 11:48 UTC
+// DON'T EDIT THIS FILE! It is generated via 'task generate' at 28 Jan 23 13:55 UTC
 //
 // Mod crypto
 //
diff --git a/client/mod_debot.gen.go b/client/mod_debot.gen.go
index e89e142..1bf39ec 100644
--- a/client/mod_debot.gen.go
+++ b/client/mod_debot.gen.go
@@ -1,6 +1,6 @@
 package client
 
-// DON'T EDIT THIS FILE! It is generated via 'task generate' at 09 Dec 22 11:48 UTC
+// DON'T EDIT THIS FILE! It is generated via 'task generate' at 28 Jan 23 13:55 UTC
 //
 // Mod debot
 //
diff --git a/client/mod_net.gen.go b/client/mod_net.gen.go
index 7c522e1..17676a8 100644
--- a/client/mod_net.gen.go
+++ b/client/mod_net.gen.go
@@ -1,6 +1,6 @@
 package client
 
-// DON'T EDIT THIS FILE! It is generated via 'task generate' at 09 Dec 22 11:48 UTC
+// DON'T EDIT THIS FILE! It is generated via 'task generate' at 28 Jan 23 13:55 UTC
 //
 // Mod net
 //
diff --git a/client/mod_processing.gen.go b/client/mod_processing.gen.go
index 69aef30..80e17ef 100644
--- a/client/mod_processing.gen.go
+++ b/client/mod_processing.gen.go
@@ -1,6 +1,6 @@
 package client
 
-// DON'T EDIT THIS FILE! It is generated via 'task generate' at 09 Dec 22 11:48 UTC
+// DON'T EDIT THIS FILE! It is generated via 'task generate' at 28 Jan 23 13:55 UTC
 //
 // Mod processing
 //
diff --git a/client/mod_proofs.gen.go b/client/mod_proofs.gen.go
index 30df4ab..d782909 100644
--- a/client/mod_proofs.gen.go
+++ b/client/mod_proofs.gen.go
@@ -1,6 +1,6 @@
 package client
 
-// DON'T EDIT THIS FILE! It is generated via 'task generate' at 09 Dec 22 11:48 UTC
+// DON'T EDIT THIS FILE! It is generated via 'task generate' at 28 Jan 23 13:55 UTC
 //
 // Mod proofs
 //
diff --git a/client/mod_tvm.gen.go b/client/mod_tvm.gen.go
index 878fbf8..0f0fc15 100644
--- a/client/mod_tvm.gen.go
+++ b/client/mod_tvm.gen.go
@@ -1,6 +1,6 @@
 package client
 
-// DON'T EDIT THIS FILE! It is generated via 'task generate' at 09 Dec 22 11:48 UTC
+// DON'T EDIT THIS FILE! It is generated via 'task generate' at 28 Jan 23 13:55 UTC
 //
 // Mod tvm
 //
diff --git a/client/mod_utils.gen.go b/client/mod_utils.gen.go
index 1191bf4..f472ef0 100644
--- a/client/mod_utils.gen.go
+++ b/client/mod_utils.gen.go
@@ -1,6 +1,6 @@
 package client
 
-// DON'T EDIT THIS FILE! It is generated via 'task generate' at 09 Dec 22 11:48 UTC
+// DON'T EDIT THIS FILE! It is generated via 'task generate' at 28 Jan 23 13:55 UTC
 //
 // Mod utils
 //