diff --git a/Cargo.toml b/Cargo.toml
index f2f55aa7..745862d9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,8 +26,10 @@ license = "MIT"
 repository = "https://github.com/bitfinity-network/bitfinity-evm-sdk"
 version = "0.27.0"
 
+
+
 [workspace.dependencies]
-alloy-primitives = { version = "0.7", default-feures = false }
+alloy-primitives = { version = "0.7", default-features = false }
 anyhow = "1.0"
 async-trait = "0.1"
 bincode = "1.3"
diff --git a/src/did/src/gas.rs b/src/did/src/gas.rs
index dfceaf2e..05c9f74d 100644
--- a/src/did/src/gas.rs
+++ b/src/did/src/gas.rs
@@ -4,7 +4,7 @@ use serde::{Deserialize, Serialize};
 use crate::transaction::AccessList;
 use crate::{Bytes, H160, U256};
 
-#[derive(Debug, Clone, Default, Eq, PartialEq, Serialize, CandidType, Deserialize)]
+#[derive(Debug, Clone, Default, Eq, PartialEq, CandidType, Deserialize, Serialize)]
 /// The `estimate_gas` method parameters
 pub struct EstimateGasRequest {
     pub from: Option<H160>,
@@ -27,7 +27,8 @@ pub struct EstimateGasRequest {
     pub max_priority_fee_per_gas: Option<U256>,
     pub gas: Option<U256>,
     pub value: Option<U256>,
-    pub data: Option<Bytes>,
+    #[serde(default, alias = "data", skip_serializing_if = "Option::is_none")]
+    pub input: Option<Bytes>,
     pub nonce: Option<U256>,
     #[serde(rename = "chainId", default, skip_serializing_if = "Option::is_none")]
     pub chain_id: Option<U256>,
@@ -38,3 +39,73 @@ pub struct EstimateGasRequest {
     )]
     pub access_list: Option<AccessList>,
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::test_utils::{test_candid_roundtrip, test_json_roundtrip};
+
+    #[test]
+    fn test_serde_roundtrip_with_data_field() {
+        let json = r#"{
+            "from": "0x1234567890123456789012345678901234567890",
+            "to": "0x0987654321098765432109876543210987654321",
+            "gasPrice": "0x1234",
+            "value": "0x5678",
+            "data": "0xabcdef",
+            "nonce": "0x9",
+            "chainId": "0x1"
+        }"#;
+
+        let request: EstimateGasRequest = serde_json::from_str(json).unwrap();
+        test_json_roundtrip(&request);
+    }
+
+    #[test]
+    fn test_serde_roundtrip_with_input_field() {
+        let json = r#"{
+            "from": "0x1234567890123456789012345678901234567890",
+            "to": "0x0987654321098765432109876543210987654321",
+            "gasPrice": "0x1234",
+            "value": "0x5678",
+            "input": "0xabcdef",
+            "nonce": "0x9",
+            "chainId": "0x1"
+        }"#;
+
+        let request: EstimateGasRequest = serde_json::from_str(json).unwrap();
+        test_json_roundtrip(&request);
+    }
+
+    #[test]
+    fn test_candid_roundtrip_with_data_field() {
+        let json = r#"{
+            "from": "0x1234567890123456789012345678901234567890",
+            "to": "0x0987654321098765432109876543210987654321",
+            "gasPrice": "0x1234",
+            "value": "0x5678",
+            "data": "0xabcdef",
+            "nonce": "0x9",
+            "chainId": "0x1"
+        }"#;
+
+        let request: EstimateGasRequest = serde_json::from_str(json).unwrap();
+        test_candid_roundtrip(&request);
+    }
+
+    #[test]
+    fn test_candid_roundtrip_with_input_field() {
+        let json = r#"{
+            "from": "0x1234567890123456789012345678901234567890",
+            "to": "0x0987654321098765432109876543210987654321",
+            "gasPrice": "0x1234",
+            "value": "0x5678",
+            "input": "0xabcdef",
+            "nonce": "0x9",
+            "chainId": "0x1"
+        }"#;
+
+        let request: EstimateGasRequest = serde_json::from_str(json).unwrap();
+        test_candid_roundtrip(&request);
+    }
+}
diff --git a/src/eth-signer/src/ic_sign.rs b/src/eth-signer/src/ic_sign.rs
index 1b4f5d55..d82e5797 100644
--- a/src/eth-signer/src/ic_sign.rs
+++ b/src/eth-signer/src/ic_sign.rs
@@ -3,11 +3,9 @@ use std::fmt;
 use candid::{CandidType, Principal};
 use ethereum_types::U256;
 use ethers_core::k256::ecdsa::{self, RecoveryId, VerifyingKey};
-use ethers_core::k256::elliptic_curve::sec1::ToEncodedPoint;
-use ethers_core::k256::PublicKey;
 use ethers_core::types::transaction::eip2718::TypedTransaction;
 use ethers_core::types::{Signature, SignatureError, H160};
-use ethers_core::utils::{self, public_key_to_address};
+use ethers_core::utils::public_key_to_address;
 use ic_canister::virtual_canister_call;
 use ic_exports::ic_cdk::api::call::RejectionCode;
 use ic_exports::ic_cdk::api::management_canister::ecdsa::{
@@ -97,21 +95,12 @@ impl IcSigner {
         let pub_key =
             VerifyingKey::from_sec1_bytes(pubkey).map_err(|_| IcSignerError::InvalidPublicKey)?;
 
-        let sec_signature = ecdsa::Signature::from_slice(&signature).map_err(|e| {
-            IcSignerError::Internal(format!(
-                "failed to parse ECDSA signature: {}",
-                e.to_string(),
-            ))
+        let sec_signature = ecdsa::Signature::from_slice(signature).map_err(|e| {
+            IcSignerError::Internal(format!("failed to parse ECDSA signature: {e}"))
         })?;
 
-        let recovery_id = RecoveryId::trial_recovery_from_prehash(
-            &pub_key,
-            &digest,
-            &sec_signature,
-        )
-        .map_err(|e| {
-            IcSignerError::Internal(format!("failed to compute recovery ID: {}", e.to_string()))
-        })?;
+        let recovery_id = RecoveryId::trial_recovery_from_prehash(&pub_key, digest, &sec_signature)
+            .map_err(|e| IcSignerError::Internal(format!("failed to compute recovery ID: {e}")))?;
 
         Ok(recovery_id)
     }
diff --git a/src/eth-signer/src/sign_strategy.rs b/src/eth-signer/src/sign_strategy.rs
index e76b5b37..d673dd7e 100644
--- a/src/eth-signer/src/sign_strategy.rs
+++ b/src/eth-signer/src/sign_strategy.rs
@@ -272,9 +272,7 @@ mod ic_sign {
 
         /// Lazily compute the public key
         async fn get_or_compute_pubkey(&self) -> Result<Vec<u8>, TransactionSignerError> {
-            let mut cached_pubkey = self.cached_pubkey.borrow_mut();
-
-            if let Some(pubkey) = cached_pubkey.as_ref() {
+            if let Some(pubkey) = self.cached_pubkey.borrow().as_ref() {
                 return Ok(pubkey.clone());
             }
 
@@ -282,7 +280,7 @@ mod ic_sign {
                 .public_key(self.key_id.clone(), self.derivation_path.clone())
                 .await?;
 
-            *cached_pubkey = Some(new_pubkey.clone());
+            *self.cached_pubkey.borrow_mut() = Some(new_pubkey.clone());
 
             Ok(new_pubkey)
         }