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Docs Overview/
Before Official Account Is Subscribed/

Before Official Account Is Subscribed

Feature Overview

This webhook event allows the app backend to check user subscription requests to the Official Account in real time, including the capability for the backend to intercept such requests.

Notes

To enable the webhook, you must configure the Webhook URL and toggle on the corresponding protocol. For more information on the configuration method, see Webhook Configuration.
During this webhook, the Chat backend initiates an HTTP POST request to the app backend.
After receiving the webhook request, the app backend must check whether the SDKAppID contained in the request URL is the SDKAppID of the app.
For additional safety-related concerns, please refer to the Webhook Overview: Security Considerations document.

Webhook Triggering Scenarios

App users subscribe to the Official Account through the client.
The app admin adds subscribers via the REST API.

Webhook Triggering Timing

Before a user subscribes to the Official Account.

API Calling Description

Sample request URL

In the subsequent example, the webhook URL configured within the app is https://www.example.com. Example:
https://www.example.com?SdkAppid=$SDKAppID&CallbackCommand=$CallbackCommand&contenttype=json&ClientIP=$ClientIP&OptPlatform=$OptPlatform

Request parameters

Parameter
Description
https
The request protocol is HTTPS, and the request method is POST.
www.example.com
Webhook URL.
SdkAppid
SDKAppID assigned by the Chat console when an app is created.
CallbackCommand
Fixed to: OfficialAccount.CallbackBeforeAddSubscriber.
contenttype
Fixed value: JSON.
ClientIP
Client IP, such as: 127.0.0.1.
OptPlatform
Client Platform, for values please refer to Webhook Overview: Webhook Protocol for the meaning of the OptPlatform parameter.

Sample request

 {
    "CallbackCommand": "OfficialAccount.CallbackBeforeAddSubscriber",
    "Official_Account": "@TOA#_test_for_penn",
    "Operator_Account": "107867",
    "SubscribeAccountList": [
        {
            "Subscriber_Account": "jared"
        },
        {
            "Subscriber_Account": "leckie"
        }
    ],
    "EventTime": 1670574414123// Millisecond level, event trigger timestamp		
}

Request fields

Object
Features
Feature
CallbackCommand
String
Webhook command.
Official_Account
String
Official Account user ID of the subscription.
Operator_Account
String
Operator UserID who initiated the request.
SubscribeAccountList
Array
List of subscribers added.
EventTime
Integer
Event trigger timestamp in milliseconds.

Sample response

Allow all users to follow the Official Account

The App backend agrees to let all users in all requests follow the Official Account.
{
    "ActionStatus": "OK",
    "ErrorInfo": "",
    "ErrorCode": 0 
}

Block certain users from subscribing to the Official Account

The App backend rejects some users in the request from subscribing to the Official Account and returns these Identifiers in RefusedMembers_Account.
{
    "ActionStatus": "OK",
    "ErrorInfo": "",
    "ErrorCode": 0,
    "RefusedSubscribers_Account": [ // List of users who were denied subscription
        "jared"
    ]
}

Response fields

Field
Type
Attribute
Description
ActionStatus
String
Mandatory
Processed Request Result:
OK: Indicates successful processing
FAIL: Indicates failure
ErrorCode
Integer
Mandatory
Error Code, 0 allows continuing to add requests (including allowing some users to be added); 1 rejects the request.
ErrorInfo
String
Mandatory
Error message.
RefusedSubscribers_Account
Array
Optional
Collection of user IDs denied addition.

References

Webhook Overview
REST API:Adding Subscribers