diff --git a/src/bip32_utils.h b/src/bip32_utils.h
new file mode 100644
index 0000000..d0b7050
--- /dev/null
+++ b/src/bip32_utils.h
@@ -0,0 +1,9 @@
+#pragma once
+
+#include <stdint.h>
+#include "bip32.h"
+
+typedef struct bip32_path_t {
+    uint8_t length;
+    uint32_t path[MAX_BIP32_PATH];
+} bip32_path_t;
diff --git a/src/eth_plugin_interface.h b/src/eth_plugin_interface.h
index 65323fc..3927d35 100644
--- a/src/eth_plugin_interface.h
+++ b/src/eth_plugin_interface.h
@@ -9,6 +9,7 @@
 #include "common_utils.h"
 #include "plugin_utils.h"
 #include "tx_content.h"
+#include "bip32_utils.h"
 
 /*************************************************************************************************
  * Comments provided in this file are quick reminders on the usage of the plugin interface       *
@@ -156,6 +157,7 @@ typedef struct ethPluginInitContract_s {
 
     // INPUT. Total length of the data to come.
     size_t dataSize;
+    bip32_path_t *bip32;
 
 } ethPluginInitContract_t;
 // --8<-- [end:handle_init_contract_parameters]