diff --git a/src/api/model/group-metadata.ts b/src/api/model/group-metadata.ts
index 584ce53870..45919721d6 100644
--- a/src/api/model/group-metadata.ts
+++ b/src/api/model/group-metadata.ts
@@ -3,11 +3,28 @@ import { Contact } from './contact'
 
 export interface Participant {
   contact: Contact,
-  id: NonSerializedId,
+  id: ContactId,
   isAdmin: boolean,
   isSuperAdmin: boolean
 }
 
+export interface PastParticipant {
+  id: ContactId,
+  leaveTs: number,
+  leaveReason: "Removed" | "Left"
+}
+
+export interface membershipApprovalRequest {
+  id: ContactId,
+  t: number
+  addedBy: ContactId
+  /**
+   * The only known value is 'LinkedGroupJoin'
+   */
+  requestMethod: string
+  parentGroupId: GroupId
+}
+
 export interface GroupMetadata {
   /**
    * The chat id of the group [[GroupChatId]]
@@ -20,27 +37,67 @@ export interface GroupMetadata {
   /**
    * The id of the owner of the group [[ContactId]]
    */
-  owner: NonSerializedId;
+  owner: ContactId;
   /**
-   * An array of participants in the group
+   * The name of the Group
    */
-  participants: Participant[];
+  subject: string;
   /**
-   * Unknown.
+   * The creation time of the group
    */
-  pendingParticipants: Participant[];
+  subjectTime: number;
   /**
    * The description of the group
    */
   desc ?: string;
+  /**
+   * Unknown
+   */
+  descId ?: string;
+  /**
+   * The timestamp of when the description was last updated, it appear to be only exists within communities group?
+   */
+  descTime ?: number;
   /**
    * The account that set the description last.
    */
   descOwner ?: ContactId;
   /**
-   * 
+   * Unknown use
    */
-  trusted ?: boolean;
+  restrict : boolean;
+  /**
+   * Unknown use
+   */
+  announce : boolean;
+  /**
+   * Unknown use
+   */
+  noFrequentlyForwarded : boolean;
+  /**
+   * Unknown use
+   */
+  ephemeralDuration : number;
+  /**
+   * Is member need to be approved to join
+   */
+  membershipApprovalMode : boolean;
+  /**
+   * Member add mode
+   */
+  memberAddMode ?: "all_member_add" | "admin_add"
+  /**
+   * Unknown use
+   */
+  reportToAdminMode ?: boolean;
+  /**
+   * Group size
+   */
+  size : number;
+  /**
+   * Not sure what this represents
+   */
+  support ?: boolean;
   /**
    * Not sure what this represents
    */
@@ -48,27 +105,83 @@ export interface GroupMetadata {
   /**
    * Not sure what this represents
    */
-  support ?: boolean;
+  terminated ?: boolean;
+  /**
+   * Not sure what this represents
+   */
+  uniqueShortNameMap : Record<any, any>;
+  /**
+   * Not sure what this represents
+   */
+  isLidAddressingMode : boolean;
   /**
    * Is this group a parent group (a.k.a community)
    */
-   isParentGroup ?: boolean
-   /**
-   * The type of group
-   */
-   groupType: 'DEAFULT' | 'SUBGROUP' | 'COMMUNITY'
-   /**
-    * Communities have a default group chat
-    */
-   defaultSubgroup: boolean
-   /**
-    * 
-    */
-   isParentGroupClosed: boolean
-   /**
-    * List of Group IDs that the host account has joined as part of this community
-    */
-   joinedSubgroups: GroupId[]
+  isParentGroup : boolean
+  /**
+   * 
+   */
+  isParentGroupClosed: boolean
+  /**
+   * The id of the parent group [[GroupId]]
+   */
+  parentGroup: GroupId
+  /**
+   * Communities have a default group chat
+   */
+  defaultSubgroup: boolean
+  /**
+   * Unknown
+   */
+  generalSubgroup: boolean
+  /**
+   * Unknown
+   */
+  generalChatAutoAddDisabled: boolean
+  /**
+   * Allow non admin to create subgroups
+   */
+  allowNonAdminSubGroupCreation: boolean
+  /**
+   * Unknown
+   */
+  lastActivityTimestamp?: number
+  /**
+   * Unknown
+   */
+  incognito: boolean
+  /**
+   * Unknown
+   */
+  hasCapi ?: boolean
+  /**
+   * An array of participants in the group
+   */
+  participants: Participant[];
+  /**
+   * Unknown.
+   */
+  pendingParticipants: Participant[];
+  /**
+   * An array of past participants, could be an empty array
+   */
+  pastParticipants: PastParticipant[];
+  /**
+   * members that is not approved to join group yet, could be an empty array if the bot is not an admin
+   */
+  membershipApprovalRequests: membershipApprovalRequest[];
+  /**
+   * Unknown, usually an empty array, please check if you found any value
+   */
+  subgroupSuggestions: []
+  /**
+   * The type of group - it seems to never appeared in the message
+   */
+  groupType?: 'DEFAULT' | 'SUBGROUP' | 'COMMUNITY'
+  /**
+   * List of Group IDs that the host account has joined as part of this community - it seems to never appeared in the message
+   */
+  joinedSubgroups: GroupId[]
 }
 
 export enum groupChangeEvent {
@@ -128,4 +241,4 @@ export interface GenericGroupChangeEvent {
    * Type of the event
    */
   type: 'picutre' | 'create' | 'delete' | 'subject' | 'revoke_invite' | 'description' | 'restrict' | 'announce' | 'no_frequently_forwarded' | 'announce_msg_bounce' | 'add' | 'remove' | 'demote' | 'promote' | 'invite' | 'leave' | 'modify' | 'v4_add_invite_sent' | 'v4_add_invite_join' | 'growth_locked' | 'growth_unlocked' | 'linked_group_join'
-}
\ No newline at end of file
+}