While configuring the webhooks with the following triggers, the boards for which you would need to trigger the webhook should be selected. If you are creating a webhook through API, then the 'partitionIds' attribute is mandatory for this trigger type.

Member added to the board

Trigger Type : Member_Added_In_Board

1. {
2.   "payload": {
3.     "id": "1006055504",
4.     "name": "alaric",
5.     "emailId": "alaric@zylker.com",
6.     "url": "https://connect.zoho.com/portal/ourintranet/profile/1006055504",
7.     "memberType": "4",
8.     "userStatus": "active",
9.     "userProfile": {
10.       "firstName": "Carol Clark",
11.       "lastName": "",
12.       "timeZone": "Asia/Kolkata",
13.       "customFields": {
14.         "12266000000430041": {
15.           "name": "Custom Field 3",
16.           "type": "DATE"
17.         },
18.         "12266000000430035": {
19.           "name": "Custom Field 2",
20.           "type": "TEXTAREA"
21.         },
22.         "12266000000430029": {
23.           "name": "Custom Field 1",
24.           "type": "TEXT"
25.         },
26.         "12266000000430073": {
27.           "name": "Custom Field 6",
28.           "type": "FILE"
29.         },
30.         "12266000000430047": {
31.           "name": "Custom Field 4",
32.           "type": "SELECTBOX"
33.         },
34.         "12266000000430059": {
35.           "name": "Custom Field 5",
36.           "type": "MULTI_SELECTBOX"
37.         }
38.       }
39.     }
40.   },
41.   "partition": {
42.     "type": "5",
43.     "id": "12266000000016001",
44.     "name": "Large Board",
45.     "url": "https://connect.zoho.com/portal/ourintranet/board/testing-board"
46.   },
47.   "triggeredBy": {
48.     "type": "0",
49.     "id": "61683612",
50.     "name": "Michelle T",
51.     "emailId": "michelle@zylker.com",
52.     "url": "https://connect.zoho.com/portal/ourintranet/profile/61683612"
53.   },
54.   "triggerType": "Member_Added_In_Board",
55.   "triggeredTime": "17 Nov 2021, 12:38 PM",
56.   "triggeredTimeInMillis": "1637132933737",
57.   "scope": {
58.     "id": "12266000000002002",
59.     "name": "Zylker",
60.     "url": "https://connect.zoho.com/portal/ourintranet"
61.   }
62. }

Member removed from a board

1. {
2.   "payload": {
3.     "id": "62592875",
4.     "name": "Emma Stone",
5.     "emailId": "emma@zylker.com",
6.     "url": "https://connect.zoho.com/portal/ourintranet/profile/62592875",
7.     "memberType": "0",
8.     "userStatus": "active",
9.     "userProfile": {
10.       "firstName": "Michelle",
11.       "lastName": "+1",
12.       "timeZone": "Asia/Kolkata",
13.       "customFields": {
14.         "12266000000430035": {
15.           "name": "Custom Field 2",
16.           "type": "TEXTAREA",
17.           "value": "Custom Field Value"
18.         },
19.         "12266000000430041": {
20.           "name": "Custom Field 3",
21.           "type": "DATE",
22.           "value": "05 Nov 2021"
23.         },
24.         "12266000000430073": {
25.           "name": "Custom Field 6",
26.           "type": "FILE",
27.           "value": {
28.             "fileId": "12266000000491135",
29.             "size": "89134",
30.             "name": "image.png",
31.             "contentType": "image/png",
32.             "downloadUrl": "https://connect.zoho.com/pulse/api/downloadFile?scopeID=12266000000002002&fileId=12266000000491135",
33.             "extension": "png"
34.           }
35.         },
36.         "12266000000430029": {
37.           "name": "Custom Field 1",
38.           "type": "TEXT",
39.           "value": "Custom Field Value"
40.         },
41.         "12266000000430047": {
42.           "name": "Custom Field 4",
43.           "type": "SELECTBOX",
44.           "value": "12266000000430049"
45.         },
46.         "12266000000430059": {
47.           "name": "Custom Field 5",
48.           "type": "MULTI_SELECTBOX",
49.           "value": [
50.             {
51.               "id": "12266000000430061",
52.               "name": "Option 1"
53.             },
54.             {
55.               "id": "12266000000430063",
56.               "name": "Option 2"
57.             }
58.           ]
59.         }
60.       }
61.     }
62.   },
63.   "partition": {
64.     "type": "5",
65.     "id": "12266000000016001",
66.     "name": "Large Board",
67.     "url": "https://connect.zoho.com/portal/ourintranet/board/testing-board"
68.   },
69.   "triggeredBy": {
70.     "type": "0",
71.     "id": "61683612",
72.     "name": "Michelle T",
73.     "emailId": "michelle@zylker.com",
74.     "url": "https://connect.zoho.com/portal/ourintranet/profile/61683612"
75.   },
76.   "triggerType": "Member_Removed_From_Board",
77.   "triggeredTime": "17 Nov 2021, 12:38 PM",
78.   "triggeredTimeInMillis": "1637132923797",
79.   "scope": {
80.     "id": "12266000000002002",
81.     "name": "Zylker",
82.     "url": "https://connect.zoho.com/portal/ourintranet"
83.   }
84. }