diff --git a/common/commands/src/validator/mixnet/operators/gateway/gateway_bonding_sign_payload.rs b/common/commands/src/validator/mixnet/operators/gateway/gateway_bonding_sign_payload.rs
index ba19f618674..0747dcac3c7 100644
--- a/common/commands/src/validator/mixnet/operators/gateway/gateway_bonding_sign_payload.rs
+++ b/common/commands/src/validator/mixnet/operators/gateway/gateway_bonding_sign_payload.rs
@@ -6,7 +6,7 @@ use crate::utils::{account_id_to_cw_addr, DataWrapper};
 use clap::Parser;
 use cosmwasm_std::Coin;
 use nym_bin_common::output_format::OutputFormat;
-use nym_mixnet_contract_common::construct_gateway_bonding_sign_payload;
+use nym_mixnet_contract_common::construct_legacy_gateway_bonding_sign_payload;
 use nym_network_defaults::{DEFAULT_CLIENT_LISTENING_PORT, DEFAULT_MIX_LISTENING_PORT};
 use nym_validator_client::nyxd::contract_traits::MixnetQueryClient;
 
@@ -71,7 +71,7 @@ pub async fn create_payload(args: Args, client: SigningClient) {
 
     let address = account_id_to_cw_addr(&client.address());
 
-    let payload = construct_gateway_bonding_sign_payload(nonce, address, coin, gateway);
+    let payload = construct_legacy_gateway_bonding_sign_payload(nonce, address, coin, gateway);
     let wrapper = DataWrapper::new(payload.to_base58_string().unwrap());
     println!("{}", args.output.format(&wrapper))
 }
diff --git a/common/commands/src/validator/mixnet/operators/mixnode/mixnode_bonding_sign_payload.rs b/common/commands/src/validator/mixnet/operators/mixnode/mixnode_bonding_sign_payload.rs
index a492b3a0b6d..3eda67a2e9a 100644
--- a/common/commands/src/validator/mixnet/operators/mixnode/mixnode_bonding_sign_payload.rs
+++ b/common/commands/src/validator/mixnet/operators/mixnode/mixnode_bonding_sign_payload.rs
@@ -7,7 +7,9 @@ use clap::Parser;
 use cosmwasm_std::{Coin, Uint128};
 use nym_bin_common::output_format::OutputFormat;
 use nym_contracts_common::Percent;
-use nym_mixnet_contract_common::{construct_mixnode_bonding_sign_payload, MixNodeCostParams};
+use nym_mixnet_contract_common::{
+    construct_legacy_mixnode_bonding_sign_payload, MixNodeCostParams,
+};
 use nym_network_defaults::{
     DEFAULT_HTTP_API_LISTENING_PORT, DEFAULT_MIX_LISTENING_PORT, DEFAULT_VERLOC_LISTENING_PORT,
 };
@@ -98,7 +100,7 @@ pub async fn create_payload(args: Args, client: SigningClient) {
     let address = account_id_to_cw_addr(&client.address());
 
     let payload =
-        construct_mixnode_bonding_sign_payload(nonce, address, coin, mixnode, cost_params);
+        construct_legacy_mixnode_bonding_sign_payload(nonce, address, coin, mixnode, cost_params);
     let wrapper = DataWrapper::new(payload.to_base58_string().unwrap());
     println!("{}", args.output.format(&wrapper))
 }
diff --git a/common/cosmwasm-smart-contracts/contracts-common/src/signing/mod.rs b/common/cosmwasm-smart-contracts/contracts-common/src/signing/mod.rs
index d2722b2f597..228e188b844 100644
--- a/common/cosmwasm-smart-contracts/contracts-common/src/signing/mod.rs
+++ b/common/cosmwasm-smart-contracts/contracts-common/src/signing/mod.rs
@@ -248,3 +248,31 @@ impl<T> ContractMessageContent<T> {
         }
     }
 }
+
+impl<T> From<ContractMessageContent<T>> for LegacyContractMessageContent<T> {
+    fn from(value: ContractMessageContent<T>) -> Self {
+        LegacyContractMessageContent {
+            sender: value.sender,
+            proxy: None,
+            funds: value.funds,
+            data: value.data,
+        }
+    }
+}
+
+#[derive(Serialize)]
+pub struct LegacyContractMessageContent<T> {
+    pub sender: Addr,
+    pub proxy: Option<Addr>,
+    pub funds: Vec<Coin>,
+    pub data: T,
+}
+
+impl<T> SigningPurpose for LegacyContractMessageContent<T>
+where
+    T: SigningPurpose,
+{
+    fn message_type() -> MessageType {
+        T::message_type()
+    }
+}
diff --git a/common/cosmwasm-smart-contracts/mixnet-contract/src/signing_types.rs b/common/cosmwasm-smart-contracts/mixnet-contract/src/signing_types.rs
index 84c9b8b4aaf..261fa99ff05 100644
--- a/common/cosmwasm-smart-contracts/mixnet-contract/src/signing_types.rs
+++ b/common/cosmwasm-smart-contracts/mixnet-contract/src/signing_types.rs
@@ -4,13 +4,18 @@
 use crate::families::FamilyHead;
 use crate::{Gateway, IdentityKey, MixNode, MixNodeCostParams};
 use contracts_common::signing::{
-    ContractMessageContent, MessageType, Nonce, SignableMessage, SigningPurpose,
+    ContractMessageContent, LegacyContractMessageContent, MessageType, Nonce, SignableMessage,
+    SigningPurpose,
 };
 use cosmwasm_std::{Addr, Coin};
 use serde::Serialize;
 
 pub type SignableMixNodeBondingMsg = SignableMessage<ContractMessageContent<MixnodeBondingPayload>>;
 pub type SignableGatewayBondingMsg = SignableMessage<ContractMessageContent<GatewayBondingPayload>>;
+pub type SignableLegacyMixNodeBondingMsg =
+    SignableMessage<LegacyContractMessageContent<MixnodeBondingPayload>>;
+pub type SignableLegacyGatewayBondingMsg =
+    SignableMessage<LegacyContractMessageContent<GatewayBondingPayload>>;
 pub type SignableFamilyJoinPermitMsg = SignableMessage<FamilyJoinPermit>;
 
 #[derive(Serialize)]
@@ -47,6 +52,20 @@ pub fn construct_mixnode_bonding_sign_payload(
     SignableMessage::new(nonce, content)
 }
 
+pub fn construct_legacy_mixnode_bonding_sign_payload(
+    nonce: Nonce,
+    sender: Addr,
+    pledge: Coin,
+    mix_node: MixNode,
+    cost_params: MixNodeCostParams,
+) -> SignableLegacyMixNodeBondingMsg {
+    let payload = MixnodeBondingPayload::new(mix_node, cost_params);
+    let content: LegacyContractMessageContent<_> =
+        ContractMessageContent::new(sender, vec![pledge], payload).into();
+
+    SignableMessage::new(nonce, content)
+}
+
 #[derive(Serialize)]
 pub struct GatewayBondingPayload {
     gateway: Gateway,
@@ -76,6 +95,19 @@ pub fn construct_gateway_bonding_sign_payload(
     SignableMessage::new(nonce, content)
 }
 
+pub fn construct_legacy_gateway_bonding_sign_payload(
+    nonce: Nonce,
+    sender: Addr,
+    pledge: Coin,
+    gateway: Gateway,
+) -> SignableLegacyGatewayBondingMsg {
+    let payload = GatewayBondingPayload::new(gateway);
+    let content: LegacyContractMessageContent<_> =
+        ContractMessageContent::new(sender, vec![pledge], payload).into();
+
+    SignableMessage::new(nonce, content)
+}
+
 #[derive(Serialize)]
 pub struct FamilyJoinPermit {
     // the granter of this permit
diff --git a/contracts/mixnet/src/gateways/signature_helpers.rs b/contracts/mixnet/src/gateways/signature_helpers.rs
index 46d37c60731..6f9b7125543 100644
--- a/contracts/mixnet/src/gateways/signature_helpers.rs
+++ b/contracts/mixnet/src/gateways/signature_helpers.rs
@@ -5,7 +5,9 @@ use crate::signing::storage as signing_storage;
 use crate::support::helpers::decode_ed25519_identity_key;
 use cosmwasm_std::{Addr, Coin, Deps};
 use mixnet_contract_common::error::MixnetContractError;
-use mixnet_contract_common::{construct_gateway_bonding_sign_payload, Gateway};
+use mixnet_contract_common::{
+    construct_gateway_bonding_sign_payload, construct_legacy_gateway_bonding_sign_payload, Gateway,
+};
 use nym_contracts_common::signing::MessageSignature;
 use nym_contracts_common::signing::Verifier;
 
@@ -19,13 +21,31 @@ pub(crate) fn verify_gateway_bonding_signature(
     // recover the public key
     let public_key = decode_ed25519_identity_key(&gateway.identity_key)?;
 
-    // reconstruct the payload
+    // reconstruct the payload, first try the current format, then attempt legacy
     let nonce = signing_storage::get_signing_nonce(deps.storage, sender.clone())?;
-    let msg = construct_gateway_bonding_sign_payload(nonce, sender, pledge, gateway);
+    let msg = construct_gateway_bonding_sign_payload(
+        nonce,
+        sender.clone(),
+        pledge.clone(),
+        gateway.clone(),
+    );
 
-    if deps.api.verify_message(msg, signature, &public_key)? {
+    if deps
+        .api
+        .verify_message(msg, signature.clone(), &public_key)?
+    {
         Ok(())
     } else {
-        Err(MixnetContractError::InvalidEd25519Signature)
+        // attempt to use legacy
+        let msg_legacy =
+            construct_legacy_gateway_bonding_sign_payload(nonce, sender, pledge, gateway);
+        if deps
+            .api
+            .verify_message(msg_legacy, signature, &public_key)?
+        {
+            Ok(())
+        } else {
+            Err(MixnetContractError::InvalidEd25519Signature)
+        }
     }
 }
diff --git a/contracts/mixnet/src/mixnodes/signature_helpers.rs b/contracts/mixnet/src/mixnodes/signature_helpers.rs
index 975bb556693..04942aaff5e 100644
--- a/contracts/mixnet/src/mixnodes/signature_helpers.rs
+++ b/contracts/mixnet/src/mixnodes/signature_helpers.rs
@@ -5,7 +5,10 @@ use crate::signing::storage as signing_storage;
 use crate::support::helpers::decode_ed25519_identity_key;
 use cosmwasm_std::{Addr, Coin, Deps};
 use mixnet_contract_common::error::MixnetContractError;
-use mixnet_contract_common::{construct_mixnode_bonding_sign_payload, MixNode, MixNodeCostParams};
+use mixnet_contract_common::{
+    construct_legacy_mixnode_bonding_sign_payload, construct_mixnode_bonding_sign_payload, MixNode,
+    MixNodeCostParams,
+};
 use nym_contracts_common::signing::MessageSignature;
 use nym_contracts_common::signing::Verifier;
 
@@ -20,13 +23,37 @@ pub(crate) fn verify_mixnode_bonding_signature(
     // recover the public key
     let public_key = decode_ed25519_identity_key(&mixnode.identity_key)?;
 
-    // reconstruct the payload
+    // reconstruct the payload, first try the current format, then attempt legacy
     let nonce = signing_storage::get_signing_nonce(deps.storage, sender.clone())?;
-    let msg = construct_mixnode_bonding_sign_payload(nonce, sender, pledge, mixnode, cost_params);
+    let msg = construct_mixnode_bonding_sign_payload(
+        nonce,
+        sender.clone(),
+        pledge.clone(),
+        mixnode.clone(),
+        cost_params.clone(),
+    );
 
-    if deps.api.verify_message(msg, signature, &public_key)? {
+    if deps
+        .api
+        .verify_message(msg, signature.clone(), &public_key)?
+    {
         Ok(())
     } else {
-        Err(MixnetContractError::InvalidEd25519Signature)
+        // attempt to use legacy
+        let msg_legacy = construct_legacy_mixnode_bonding_sign_payload(
+            nonce,
+            sender,
+            pledge,
+            mixnode,
+            cost_params,
+        );
+        if deps
+            .api
+            .verify_message(msg_legacy, signature, &public_key)?
+        {
+            Ok(())
+        } else {
+            Err(MixnetContractError::InvalidEd25519Signature)
+        }
     }
 }
diff --git a/nym-wallet/src-tauri/src/operations/helpers.rs b/nym-wallet/src-tauri/src/operations/helpers.rs
index 2b5631eb580..da0093e2938 100644
--- a/nym-wallet/src-tauri/src/operations/helpers.rs
+++ b/nym-wallet/src-tauri/src/operations/helpers.rs
@@ -9,8 +9,8 @@ use nym_contracts_common::signing::{
 };
 use nym_crypto::asymmetric::identity;
 use nym_mixnet_contract_common::{
-    construct_mixnode_bonding_sign_payload, Gateway, GatewayBondingPayload, MixNode,
-    MixNodeCostParams, SignableGatewayBondingMsg, SignableMixNodeBondingMsg,
+    construct_legacy_mixnode_bonding_sign_payload, Gateway, GatewayBondingPayload, MixNode,
+    MixNodeCostParams, SignableGatewayBondingMsg, SignableLegacyMixNodeBondingMsg,
 };
 use nym_validator_client::nyxd::contract_traits::MixnetQueryClient;
 use nym_validator_client::nyxd::error::NyxdError;
@@ -42,14 +42,14 @@ pub(crate) async fn create_mixnode_bonding_sign_payload<P: AddressAndNonceProvid
     cost_params: MixNodeCostParams,
     pledge: Coin,
     vesting: bool,
-) -> Result<SignableMixNodeBondingMsg, BackendError> {
+) -> Result<SignableLegacyMixNodeBondingMsg, BackendError> {
     if vesting {
         return Err(BackendError::UnsupportedVestingOperation);
     }
     let sender = client.cw_address();
     let nonce = client.get_signing_nonce().await?;
 
-    Ok(construct_mixnode_bonding_sign_payload(
+    Ok(construct_legacy_mixnode_bonding_sign_payload(
         nonce,
         sender,
         pledge.into(),