diff --git a/src/service.ts b/src/service.ts
index 4a0a5a6..c6a015d 100644
--- a/src/service.ts
+++ b/src/service.ts
@@ -281,4 +281,182 @@ export class Service {
       throw error;
     }
   }
+
+  // WebSocket message methods (stubs for now)
+  async sendNewTxMessage(message: string) {
+    console.log('📤 Sending NewTx message:', message);
+    // TODO: Implement actual WebSocket sending
+  }
+
+  async sendCommitMessage(message: string) {
+    console.log('�� Sending Commit message:', message);
+    // TODO: Implement actual WebSocket sending
+  }
+
+  async sendCipherMessages(ciphers: string[]) {
+    console.log('📤 Sending Cipher messages:', ciphers.length, 'ciphers');
+    for (let i = 0; i < ciphers.length; i++) {
+      const cipher = ciphers[i];
+      console.log('📤 Sending Cipher:', cipher);
+      // TODO: Implement actual WebSocket sending
+    }
+  }
+
+  // Blob and data storage methods
+  async saveBlobToDb(hash: string, data: Blob) {
+    const db = await Database.getInstance();
+    try {
+      await db.addObject({
+        storeName: 'data',
+        object: data,
+        key: hash,
+      });
+    } catch (e) {
+      console.error(`Failed to save data to db: ${e}`);
+    }
+  } 
+
+  async getBlobFromDb(hash: string): Promise<Blob | null> {
+    const db = await Database.getInstance();
+    try {
+      return await db.getObject('data', hash);
+    } catch (e) {
+      return null;
+    }
+  }
+
+  async saveDataToStorage(hash: string, data: Blob, ttl: number | null) {
+    console.log('💾 Saving data to storage:', hash);
+    // TODO: Implement actual storage service
+    // const storages = [STORAGEURL];
+    // try {
+    //   await storeData(storages, hash, data, ttl);
+    // } catch (e) {
+    //   console.error(`Failed to store data with hash ${hash}: ${e}`);
+    // }
+  }
+
+  async saveDiffsToDb(diffs: any[]) {
+    const db = await Database.getInstance();
+    try {
+      for (const diff of diffs) {
+        await db.addObject({
+          storeName: 'diffs',
+          object: diff,
+          key: null,
+        });
+      }
+    } catch (e) {
+      throw new Error(`Failed to save diffs: ${e}`);
+    }
+  }
+
+  // Utility methods for data conversion
+  hexToBlob(hexString: string): Blob {
+    const uint8Array = this.hexToUInt8Array(hexString);
+    return new Blob([uint8Array], { type: "application/octet-stream" });
+  }
+
+  hexToUInt8Array(hexString: string): Uint8Array {
+    if (hexString.length % 2 !== 0) {
+      throw new Error("Invalid hex string: length must be even");
+    }
+    const uint8Array = new Uint8Array(hexString.length / 2);
+    for (let i = 0; i < hexString.length; i += 2) {
+      uint8Array[i / 2] = parseInt(hexString.substr(i, 2), 16);
+    }
+    return uint8Array;
+  }
+
+  // Main handleApiReturn method
+  public async handleApiReturn(apiReturn: ApiReturn) {
+    console.log('🔄 Handling API return:', apiReturn);
+    
+    if (apiReturn.partial_tx) {
+      try {
+        const res = wasm.sign_transaction(apiReturn.partial_tx);
+        apiReturn.new_tx_to_send = res.new_tx_to_send;
+      } catch (e) {
+        console.error('Failed to sign transaction:', e);
+      }
+    }
+
+    if (apiReturn.new_tx_to_send && apiReturn.new_tx_to_send.transaction.length != 0) {
+      await this.sendNewTxMessage(JSON.stringify(apiReturn.new_tx_to_send));
+      await new Promise(r => setTimeout(r, 500));
+    }
+
+    if (apiReturn.secrets) {
+      const unconfirmedSecrets = apiReturn.secrets.unconfirmed_secrets;
+      const confirmedSecrets = apiReturn.secrets.shared_secrets;
+
+      const db = await Database.getInstance();
+      for (const secret of unconfirmedSecrets) {
+        await db.addObject({
+          storeName: 'unconfirmed_secrets',
+          object: secret,
+          key: null,
+        });
+      }
+      const entries = Object.entries(confirmedSecrets).map(([key, value]) => ({ key, value }));
+      for (const entry of entries) {
+        try {
+          await db.addObject({
+            storeName: 'shared_secrets',
+            object: entry.value,
+            key: entry.key,
+          });
+        } catch (e) {
+          throw e;
+        }
+      }
+    }
+
+    if (apiReturn.updated_process) {
+      const updatedProcess = apiReturn.updated_process;
+      const processId: string = updatedProcess.process_id;
+
+      if (updatedProcess.encrypted_data && Object.keys(updatedProcess.encrypted_data).length != 0) {
+        for (const [hash, cipher] of Object.entries(updatedProcess.encrypted_data)) {
+          const blob = this.hexToBlob(cipher);
+          try {
+            await this.saveBlobToDb(hash, blob);
+          } catch (e) {
+            console.error(e);
+          }
+        }
+      }
+
+      // Save process to db
+      await this.saveProcessToDb(processId, updatedProcess.current_process);
+
+      if (updatedProcess.diffs && updatedProcess.diffs.length != 0) {
+        try {
+          await this.saveDiffsToDb(updatedProcess.diffs);
+        } catch (e) {
+          console.error('Failed to save diffs to db:', e);
+        }
+      }
+    }
+
+    if (apiReturn.push_to_storage && apiReturn.push_to_storage.length != 0) {
+      for (const hash of apiReturn.push_to_storage) {
+        const blob = await this.getBlobFromDb(hash);
+        if (blob) {
+          await this.saveDataToStorage(hash, blob, null);
+        } else {
+          console.error('Failed to get data from db');
+        }
+      }
+    }
+
+    if (apiReturn.commit_to_send) {
+      const commit = apiReturn.commit_to_send;
+      await this.sendCommitMessage(JSON.stringify(commit));
+    }
+
+    if (apiReturn.ciphers_to_send && apiReturn.ciphers_to_send.length != 0) {
+      await this.sendCipherMessages(apiReturn.ciphers_to_send);
+    }
+  }
 }