diff --git a/package-lock.json b/package-lock.json
index b985887..c7e8347 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,7 +8,7 @@
       "name": "dash-react-tutorial",
       "version": "0.0.0",
       "dependencies": {
-        "@dashevo/evo-sdk": "^3.0.1",
+        "@dashevo/evo-sdk": "^3.1.0-dev.1",
         "react": "^19.2.4",
         "react-dom": "^19.2.4"
       },
@@ -268,20 +268,20 @@
       }
     },
     "node_modules/@dashevo/evo-sdk": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/@dashevo/evo-sdk/-/evo-sdk-3.0.1.tgz",
-      "integrity": "sha512-5eSBeUQgEfWYS1QWF//mBl6xABLSs+b3HVHN+FHjIZv1GrJnaUp7hNfZWkaQD0HGFItdqdpQN377DvJdsmgXNA==",
+      "version": "3.1.0-dev.1",
+      "resolved": "https://registry.npmjs.org/@dashevo/evo-sdk/-/evo-sdk-3.1.0-dev.1.tgz",
+      "integrity": "sha512-afVJhPXkgrg2vlLgyAgcWqUeugXhA5XkfssQZWQGNXlZkH7/22yB9sd37UX+tWtvoqEjxKzygryzTngt1SI44w==",
       "dependencies": {
-        "@dashevo/wasm-sdk": "3.0.1"
+        "@dashevo/wasm-sdk": "3.1.0-dev.1"
       },
       "engines": {
         "node": ">=18.18"
       }
     },
     "node_modules/@dashevo/wasm-sdk": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/@dashevo/wasm-sdk/-/wasm-sdk-3.0.1.tgz",
-      "integrity": "sha512-kWa+VRdNWT12LP9FimZ7PvFE8UlXsuMSf0qmiL3kzTslrUSv7ZkCKDAnffN6a8jUGdnWV0hQAnir5g9nMkpgow==",
+      "version": "3.1.0-dev.1",
+      "resolved": "https://registry.npmjs.org/@dashevo/wasm-sdk/-/wasm-sdk-3.1.0-dev.1.tgz",
+      "integrity": "sha512-s4ECro2+zCehfag7XVqbxrsDqOAZN2yMIGhMNjjeFesaOqOl1bUWffs3QMtEeuMZdYtKcZxUrlKsW1KlfLN/WQ==",
       "engines": {
         "node": ">=18.18"
       }
diff --git a/package.json b/package.json
index 618ec67..011ed59 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "preview": "vite preview"
   },
   "dependencies": {
-    "@dashevo/evo-sdk": "^3.0.1",
+    "@dashevo/evo-sdk": "^3.1.0-dev.1",
     "react": "^19.2.4",
     "react-dom": "^19.2.4"
   },
diff --git a/src/components/CreateListing.tsx b/src/components/CreateListing.tsx
index f878ca4..2523bbc 100644
--- a/src/components/CreateListing.tsx
+++ b/src/components/CreateListing.tsx
@@ -1,9 +1,11 @@
 import { useState, useCallback } from 'react';
 import { useDashMutation } from '../hooks/useDashMutation';
+import { Document, IdentitySigner } from '@dashevo/evo-sdk';
 
 const CONTRACT_ID = 'YOUR_CONTRACT_ID';
 const IDENTITY_ID = 'YOUR_IDENTITY_ID';
-const PRIVATE_KEY = 'YOUR_PRIVATE_KEY_WIF';
+const PRIVATE_KEY_WIF = 'YOUR_PRIVATE_KEY_WIF';
+const SIGNING_KEY_INDEX = 0;
 
 export function CreateListing() {
   const [make, setMake] = useState('');
@@ -13,11 +15,24 @@ export function CreateListing() {
 
   const mutation = useDashMutation(
     useCallback(
-      (sdk) =>
-        sdk.documents.create({
-          contractId: CONTRACT_ID,
-          documentType: 'listing',
-          document: {
+      async (sdk) => {
+        // Fetch the owner identity to get the signing key
+        const identity = await sdk.identities.fetch(IDENTITY_ID);
+        if (!identity) throw new Error('Identity not found');
+
+        const identityKey = identity.publicKeys[SIGNING_KEY_INDEX];
+        if (!identityKey) throw new Error('Signing key not found');
+
+        // Create a signer with the private key
+        const signer = new IdentitySigner();
+        signer.addKeyFromWif(PRIVATE_KEY_WIF);
+
+        // Build the document
+        const document = new Document({
+          documentTypeName: 'listing',
+          dataContractId: CONTRACT_ID,
+          ownerId: IDENTITY_ID,
+          properties: {
             make,
             model,
             year,
@@ -25,11 +40,15 @@ export function CreateListing() {
             mileageKm: 0,
             status: 'available',
           },
-          identityId: IDENTITY_ID,
-          privateKeyWif: PRIVATE_KEY,
-          signingKeyIndex: 0,
-          nonce: sdk.identities.contractNonce(IDENTITY_ID, CONTRACT_ID),
-        }),
+        });
+
+        // Broadcast the create transition
+        await sdk.documents.create({
+          document,
+          identityKey,
+          signer,
+        });
+      },
       [make, model, year, price],
     ),
   );
diff --git a/src/components/IdentityViewer.tsx b/src/components/IdentityViewer.tsx
index 3730839..28f7630 100644
--- a/src/components/IdentityViewer.tsx
+++ b/src/components/IdentityViewer.tsx
@@ -22,9 +22,9 @@ export function IdentityViewer() {
       {error && <p className="error">{error}</p>}
       {identity && (
         <div className="identity-card">
-          <p><strong>ID:</strong> {identity.getId().toString()}</p>
-          <p><strong>Balance:</strong> {identity.getBalance().toString()} credits</p>
-          <p><strong>Public keys:</strong> {identity.getPublicKeys().length}</p>
+          <p><strong>ID:</strong> {identity.id.toString()}</p>
+          <p><strong>Balance:</strong> {identity.balance.toString()} credits</p>
+          <p><strong>Public keys:</strong> {identity.publicKeys.length}</p>
         </div>
       )}
     </div>
diff --git a/src/components/ListingsList.tsx b/src/components/ListingsList.tsx
index 60ae924..d163c49 100644
--- a/src/components/ListingsList.tsx
+++ b/src/components/ListingsList.tsx
@@ -4,8 +4,8 @@ const CONTRACT_ID = 'YOUR_CONTRACT_ID';
 
 export function ListingsList() {
   const { data: results, isLoading, error, refetch } = useDocuments({
-    contractId: CONTRACT_ID,
-    documentType: 'listing',
+    dataContractId: CONTRACT_ID,
+    documentTypeName: 'listing',
     where: [['status', '==', 'available']],
     orderBy: [['priceUsd', 'asc']],
     limit: 20,
@@ -22,10 +22,10 @@ export function ListingsList() {
       <ul>
         {[...results.entries()].map(([id, doc]) => {
           if (!doc) return null;
-          const d = doc.getData();
+          const d = doc.properties as Record<string, unknown>;
           return (
-            <li key={id}>
-              <strong>{d.year} {d.make} {d.model}</strong> — ${d.priceUsd}
+            <li key={id.toString()}>
+              <strong>{d.year as number} {d.make as string} {d.model as string}</strong> — ${d.priceUsd as number}
             </li>
           );
         })}
diff --git a/src/hooks/useDocuments.ts b/src/hooks/useDocuments.ts
index 715aeae..d5b468e 100644
--- a/src/hooks/useDocuments.ts
+++ b/src/hooks/useDocuments.ts
@@ -7,3 +7,5 @@ export function useDocuments(query: DocumentsQuery) {
     [JSON.stringify(query)],
   );
 }
+
+export type { DocumentsQuery };
diff --git a/src/hooks/useTokenBalance.ts b/src/hooks/useTokenBalance.ts
index f715200..90988fc 100644
--- a/src/hooks/useTokenBalance.ts
+++ b/src/hooks/useTokenBalance.ts
@@ -4,7 +4,11 @@ export function useTokenBalance(identityId: string, tokenId: string) {
   return useDashQuery(
     async (sdk) => {
       const balances = await sdk.tokens.identityBalances(identityId, [tokenId]);
-      return balances.get(tokenId) ?? 0n;
+      // Map keys are Identifier objects; find the matching entry by string comparison
+      for (const [id, balance] of balances.entries()) {
+        if (id.toString() === tokenId) return balance;
+      }
+      return 0n;
     },
     [identityId, tokenId],
   );