diff --git a/packages/account/src/account.ts b/packages/account/src/account.ts
index e9c02f08d..1752ed1e3 100644
--- a/packages/account/src/account.ts
+++ b/packages/account/src/account.ts
@@ -3,7 +3,7 @@ import { migrator, defaults, version } from '@0xsequence/migration'
 import { ChainId, NetworkConfig } from '@0xsequence/network'
 import { FeeOption, FeeQuote, isRelayer, Relayer, RpcRelayer } from '@0xsequence/relayer'
 import { tracker } from '@0xsequence/sessions'
-import { Orchestrator } from '@0xsequence/signhub'
+import { SignatureOrchestrator } from '@0xsequence/signhub'
 import { encodeTypedDataDigest, getDefaultConnectionInfo } from '@0xsequence/utils'
 import { Wallet } from '@0xsequence/wallet'
 import { ethers, TypedDataDomain, TypedDataField } from 'ethers'
@@ -48,7 +48,7 @@ export type AccountOptions = {
   migrations?: migrator.Migrations
 
   // Orchestrator manages signing messages and transactions
-  orchestrator: Orchestrator
+  orchestrator: SignatureOrchestrator
 
   // Networks information and providers
   networks: NetworkConfig[]
@@ -93,7 +93,7 @@ export class Account {
   public readonly migrator: migrator.Migrator
   public readonly migrations: migrator.Migrations
 
-  private orchestrator: Orchestrator
+  private orchestrator: SignatureOrchestrator
 
   constructor(options: AccountOptions) {
     this.address = ethers.utils.getAddress(options.address)
@@ -115,7 +115,7 @@ export class Account {
     config: commons.config.SimpleConfig
     tracker: tracker.ConfigTracker & migrator.PresignedMigrationTracker
     contexts: commons.context.VersionedContext
-    orchestrator: Orchestrator
+    orchestrator: SignatureOrchestrator
     networks: NetworkConfig[]
     migrations?: migrator.Migrations
   }): Promise<Account> {
@@ -195,7 +195,7 @@ export class Account {
     return new RpcRelayer(found.relayer)
   }
 
-  setOrchestrator(orchestrator: Orchestrator) {
+  setOrchestrator(orchestrator: SignatureOrchestrator) {
     this.orchestrator = orchestrator
   }
 
diff --git a/packages/auth/src/session.ts b/packages/auth/src/session.ts
index 151a90375..fba557d50 100644
--- a/packages/auth/src/session.ts
+++ b/packages/auth/src/session.ts
@@ -3,7 +3,7 @@ import { jwtDecodeClaims } from '@0xsequence/utils'
 import { Account } from '@0xsequence/account'
 import { ethers } from 'ethers'
 import { tracker, trackers } from '@0xsequence/sessions'
-import { Orchestrator } from '@0xsequence/signhub'
+import { Orchestrator, SignatureOrchestrator } from '@0xsequence/signhub'
 import { migrator } from '@0xsequence/migration'
 import { commons, universal, v1 } from '@0xsequence/core'
 import { Services, ServicesSettings, SessionJWT, SessionMeta } from './services'
@@ -137,7 +137,7 @@ export class Session {
 
   static async open(args: {
     settings?: Partial<SessionSettings>
-    orchestrator: Orchestrator
+    orchestrator: SignatureOrchestrator
     addSigners?: commons.config.SimpleSigner[]
     referenceSigner: string
     threshold?: ethers.BigNumberish
@@ -286,7 +286,7 @@ export class Session {
 
   static async load(args: {
     settings?: Partial<SessionSettings>
-    orchestrator: Orchestrator
+    orchestrator: SignatureOrchestrator
     dump: SessionDumpV1 | SessionDumpV2
     editConfigOnMigration: (config: commons.config.Config) => commons.config.Config
     onMigration?: (account: Account) => Promise<boolean>
diff --git a/packages/auth/tests/session.spec.ts b/packages/auth/tests/session.spec.ts
index ea17cae83..480920d8a 100644
--- a/packages/auth/tests/session.spec.ts
+++ b/packages/auth/tests/session.spec.ts
@@ -5,7 +5,7 @@ import { migrator } from '@0xsequence/migration'
 import { NetworkConfig } from '@0xsequence/network'
 import { LocalRelayer } from '@0xsequence/relayer'
 import { tracker, trackers } from '@0xsequence/sessions'
-import { Orchestrator } from '@0xsequence/signhub'
+import { Orchestrator, SignatureOrchestrator } from '@0xsequence/signhub'
 import * as utils from '@0xsequence/tests'
 import { CallReceiverMock, HookCallerMock } from '@0xsequence/wallet-contracts'
 import * as chai from 'chai'
@@ -70,7 +70,7 @@ describe('Wallet integration', function () {
   let networks: NetworkConfig[]
 
   let tracker: tracker.ConfigTracker & migrator.PresignedMigrationTracker
-  let orchestrator: Orchestrator
+  let orchestrator: SignatureOrchestrator
   let simpleSettings: SessionSettings
 
   before(async () => {
diff --git a/packages/signhub/src/orchestrator.ts b/packages/signhub/src/orchestrator.ts
index e6c6b55ec..a08883d49 100644
--- a/packages/signhub/src/orchestrator.ts
+++ b/packages/signhub/src/orchestrator.ts
@@ -38,6 +38,17 @@ export function isSignerStatusPending(status: SignerStatus): status is SignerSta
 
 export const InitialSituation = 'Initial'
 
+export interface SignatureOrchestrator {
+  getSigners(): Promise<string[]>
+
+  signMessage(args: {
+    candidates: string[]
+    message: ethers.BytesLike
+    metadata: Object
+    callback: (status: Status, onNewMetadata: (metadata: Object) => void) => boolean
+  }): Promise<Status>
+}
+
 /**
  * It orchestrates the signing of a single digest by multiple signers.
  * It can provide internal visibility of the signing process, and it also
diff --git a/packages/wallet/src/wallet.ts b/packages/wallet/src/wallet.ts
index b1030b491..2541577c1 100644
--- a/packages/wallet/src/wallet.ts
+++ b/packages/wallet/src/wallet.ts
@@ -1,6 +1,6 @@
 import { ethers } from 'ethers'
 import { commons, v1, v2 } from '@0xsequence/core'
-import { isSignerStatusSigned, Orchestrator, Status } from '@0xsequence/signhub'
+import { isSignerStatusSigned, SignatureOrchestrator, Status } from '@0xsequence/signhub'
 import { Deferrable, subDigestOf } from '@0xsequence/utils'
 import { FeeQuote, Relayer, SimulateResult } from '@0xsequence/relayer'
 import { walletContracts } from '@0xsequence/abi'
@@ -24,7 +24,7 @@ export type WalletOptions<
   chainId: ethers.BigNumberish
   address: string
 
-  orchestrator: Orchestrator
+  orchestrator: SignatureOrchestrator
   reader?: commons.reader.Reader
 
   provider?: ethers.providers.Provider
@@ -78,7 +78,7 @@ export class Wallet<
     config: commons.config.ConfigCoder<Y>
   }
 
-  private orchestrator: Orchestrator
+  private orchestrator: SignatureOrchestrator
   private _reader?: commons.reader.Reader
 
   constructor(options: WalletOptions<T, Y, Z>) {
@@ -119,7 +119,7 @@ export class Wallet<
     this.config = config
   }
 
-  setOrchestrator(orchestrator: Orchestrator) {
+  setOrchestrator(orchestrator: SignatureOrchestrator) {
     this.orchestrator = orchestrator
   }
 
diff --git a/packages/wallet/tests/wallet.spec.ts b/packages/wallet/tests/wallet.spec.ts
index 8ece59bcd..381cbe4f9 100644
--- a/packages/wallet/tests/wallet.spec.ts
+++ b/packages/wallet/tests/wallet.spec.ts
@@ -5,7 +5,7 @@ import { commons, v1, v2 } from '@0xsequence/core'
 import { context } from '@0xsequence/tests'
 import { ethers } from 'ethers'
 import { SequenceOrchestratorWrapper, Wallet } from '../src/index'
-import { Orchestrator, signers as hubsigners } from '@0xsequence/signhub'
+import { Orchestrator, SignatureOrchestrator, signers as hubsigners } from '@0xsequence/signhub'
 import { LocalRelayer } from '@0xsequence/relayer'
 
 const { expect } = chai
@@ -192,7 +192,7 @@ describe('Wallet (primitive)', () => {
         }
       ].map(({ name, signers }) => {
         describe(`Using ${name}`, () => {
-          let orchestrator: Orchestrator
+          let orchestrator: SignatureOrchestrator
           let config: commons.config.Config
 
           beforeEach(async () => {