diff --git a/auction-server/src/state.rs b/auction-server/src/state.rs
index d191092f..8818b418 100644
--- a/auction-server/src/state.rs
+++ b/auction-server/src/state.rs
@@ -1680,9 +1680,12 @@ impl Store {
 #[serde_as]
 #[derive(Serialize, Clone, ToSchema, ToResponse)]
 pub struct SvmChainUpdate {
+    #[schema(example = "solana", value_type = String)]
     pub chain_id:                  ChainId,
     #[serde_as(as = "DisplayFromStr")]
+    #[schema(example = "SLxp9LxX1eE9Z5v99Y92DaYEwyukFgMUF6zRerCF12j", value_type = String)]
     pub blockhash:                 Hash,
     /// The prioritization fee that the server suggests to use for the next transaction
+    #[schema(example = "1000", value_type = u64)]
     pub latest_prioritization_fee: MicroLamports,
 }
diff --git a/sdk/js/package-lock.json b/sdk/js/package-lock.json
index dc40f743..64bf88cb 100644
--- a/sdk/js/package-lock.json
+++ b/sdk/js/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@pythnetwork/express-relay-js",
-  "version": "0.14.1",
+  "version": "0.14.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@pythnetwork/express-relay-js",
-      "version": "0.14.1",
+      "version": "0.14.2",
       "license": "Apache-2.0",
       "dependencies": {
         "@coral-xyz/anchor": "^0.30.1",
diff --git a/sdk/js/package.json b/sdk/js/package.json
index 102ef81d..d94c967f 100644
--- a/sdk/js/package.json
+++ b/sdk/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@pythnetwork/express-relay-js",
-  "version": "0.14.1",
+  "version": "0.14.2",
   "description": "Utilities for interacting with the express relay protocol",
   "homepage": "https://github.com/pyth-network/per/tree/main/sdk/js",
   "author": "Douro Labs",
diff --git a/sdk/js/src/examples/simpleSearcherLimo.ts b/sdk/js/src/examples/simpleSearcherLimo.ts
index 70ba64e9..d18359f1 100644
--- a/sdk/js/src/examples/simpleSearcherLimo.ts
+++ b/sdk/js/src/examples/simpleSearcherLimo.ts
@@ -103,7 +103,7 @@ export class SimpleSearcherLimo {
     const ixsTakeOrder = await this.generateTakeOrderIxs(limoClient, order);
     const feeInstruction = ComputeBudgetProgram.setComputeUnitPrice({
       microLamports:
-        this.latestChainUpdate[this.chainId].latest_prioritization_fee,
+        this.latestChainUpdate[this.chainId].latestPrioritizationFee,
     });
     const txRaw = new anchor.web3.Transaction().add(
       feeInstruction,
@@ -236,7 +236,7 @@ export class SimpleSearcherLimo {
   }
 
   async svmChainUpdateHandler(update: SvmChainUpdate) {
-    this.latestChainUpdate[update.chain_id] = update;
+    this.latestChainUpdate[update.chainId] = update;
   }
 
   // NOTE: Developers are responsible for implementing custom removal logic specific to their use case.
diff --git a/sdk/js/src/index.ts b/sdk/js/src/index.ts
index f3549562..feac50f4 100644
--- a/sdk/js/src/index.ts
+++ b/sdk/js/src/index.ts
@@ -166,7 +166,13 @@ export class Client {
         }
       } else if ("type" in message && message.type === "svm_chain_update") {
         if (typeof this.websocketSvmChainUpdateCallback === "function") {
-          await this.websocketSvmChainUpdateCallback(message.update);
+          await this.websocketSvmChainUpdateCallback({
+            chainId: message.update.chain_id,
+            blockhash: message.update.blockhash,
+            latestPrioritizationFee: BigInt(
+              message.update.latest_prioritization_fee
+            ),
+          });
         }
       } else if ("type" in message && message.type === "remove_opportunities") {
         if (typeof this.websocketRemoveOpportunitiesCallback === "function") {
diff --git a/sdk/js/src/serverTypes.d.ts b/sdk/js/src/serverTypes.d.ts
index c55805c7..b6af9d83 100644
--- a/sdk/js/src/serverTypes.d.ts
+++ b/sdk/js/src/serverTypes.d.ts
@@ -771,9 +771,16 @@ export interface components {
       items: components["schemas"]["SimulatedBid"][];
     };
     SvmChainUpdate: {
-      blockhash: components["schemas"]["Hash"];
-      chain_id: components["schemas"]["ChainId"];
-      latest_prioritization_fee: components["schemas"]["MicroLamports"];
+      /** @example SLxp9LxX1eE9Z5v99Y92DaYEwyukFgMUF6zRerCF12j */
+      blockhash: string;
+      /** @example solana */
+      chain_id: string;
+      /**
+       * Format: int64
+       * @description The prioritization fee that the server suggests to use for the next transaction
+       * @example 1000
+       */
+      latest_prioritization_fee: number;
     };
     TokenAmountEvm: {
       /**
diff --git a/sdk/js/src/types.ts b/sdk/js/src/types.ts
index 70ba95ed..fc424ec0 100644
--- a/sdk/js/src/types.ts
+++ b/sdk/js/src/types.ts
@@ -242,7 +242,11 @@ export type SvmConstantsConfig = {
   expressRelayProgram: PublicKey;
 };
 
-export type SvmChainUpdate = components["schemas"]["SvmChainUpdate"];
+export type SvmChainUpdate = {
+  chainId: ChainId;
+  blockhash: string;
+  latestPrioritizationFee: bigint;
+};
 
 export type OpportunityDeleteSvm = {
   chainId: ChainId;