diff --git a/src/sign/index.ts b/src/sign/index.ts
index 8350d7f08..2d0e898aa 100644
--- a/src/sign/index.ts
+++ b/src/sign/index.ts
@@ -11,6 +11,8 @@ import {
   Unfollow,
   Subscribe,
   Unsubscribe,
+  Webhook,
+  RemoveWebhook,
   Profile,
   Alias,
   spaceTypes,
@@ -27,6 +29,8 @@ import {
   subscribeTypes,
   unfollowTypes,
   unsubscribeTypes,
+  webhookTypes,
+  removeWebhookTypes,
   profileTypes,
   aliasTypes,
   deleteSpaceType,
@@ -64,7 +68,12 @@ export default class Client {
   }
 
   async send(envelop) {
-    const url = `${this.address}/api/msg`;
+    const webhookAction = Object.keys(envelop.data.types).filter((key) =>
+      ['Webhook', 'RemoveWebhook'].includes(key)
+    ).length;
+    const url = webhookAction
+      ? `${this.address}/api/subscribers`
+      : `${this.address}/api/msg`;
     const init = {
       method: 'POST',
       headers: {
@@ -159,6 +168,22 @@ export default class Client {
     return await this.sign(web3, address, message, unsubscribeTypes);
   }
 
+  async webhook(
+    web3: Web3Provider | Wallet,
+    address: string,
+    message: Webhook
+  ) {
+    return await this.sign(web3, address, message, webhookTypes);
+  }
+
+  async removeWebhook(
+    web3: Web3Provider | Wallet,
+    address: string,
+    message: RemoveWebhook
+  ) {
+    return await this.sign(web3, address, message, removeWebhookTypes);
+  }
+
   async profile(
     web3: Web3Provider | Wallet,
     address: string,
diff --git a/src/sign/types.ts b/src/sign/types.ts
index d11c09321..e01f0fa3f 100644
--- a/src/sign/types.ts
+++ b/src/sign/types.ts
@@ -73,6 +73,21 @@ export interface Unsubscribe {
   timestamp?: number;
 }
 
+export interface Webhook {
+  from?: string;
+  space: string;
+  url: string;
+  active: number;
+  timestamp?: number;
+}
+
+export interface RemoveWebhook {
+  from?: string;
+  id: number;
+  active: number;
+  timestamp?: number;
+}
+
 export interface Profile {
   from?: string;
   timestamp?: number;
@@ -242,6 +257,23 @@ export const unsubscribeTypes = {
   ]
 };
 
+export const webhookTypes = {
+  Webhook: [
+    { name: 'from', type: 'address' },
+    { name: 'space', type: 'string' },
+    { name: 'url', type: 'string' },
+    { name: 'active', type: 'uint8' }
+  ]
+};
+
+export const removeWebhookTypes = {
+  RemoveWebhook: [
+    { name: 'from', type: 'address' },
+    { name: 'id', type: 'uint64' },
+    { name: 'active', type: 'uint8' }
+  ]
+};
+
 export const profileTypes = {
   Profile: [
     { name: 'from', type: 'address' },