diff --git a/ccm-core-apiclient/src/main/typescript/entities/security.ts b/ccm-core-apiclient/src/main/typescript/entities/security.ts
new file mode 100644
index 000000000..c3a087cf1
--- /dev/null
+++ b/ccm-core-apiclient/src/main/typescript/entities/security.ts
@@ -0,0 +1,95 @@
+import {
+    assertProperties,
+    LocalizedString,
+} from "@libreccm/ccm-apiclient-commons";
+import { CcmObjectId } from "./core";
+import { TaskId } from "./workflow";
+
+export interface EmailAddressData {
+    address: string;
+    bouncing: boolean;
+    verified: boolean;
+}
+
+export interface GroupData {
+    partyId: number;
+    uuid: string;
+    name: string;
+    memberships: GroupUserMembership[];
+    roleMemberships: PartyRoleMembership[];
+}
+
+export interface GroupUserMembership {
+    membershipId: number;
+    uuid: string;
+    user: PartyId;
+}
+
+export interface PartyId {
+    partyId: number;
+    uuid: string;
+    name: string;
+}
+
+export interface PartyRoleMembership {
+    membershipId: number;
+    uuid: string;
+    role: RoleId;
+}
+
+export interface RoleAssignedTask {
+    taskAssignmentId: number;
+    uuid: string;
+    task: TaskId;
+}
+
+export interface RoleData {
+    roleId: number;
+    uuid: string;
+    name: string;
+    description: LocalizedString;
+    permissions: RolePermission[];
+}
+
+export interface RoleId {
+    roleId: number;
+    uuid: string;
+    name: string;
+}
+
+export interface RolePartyMember {
+    membershipId: number;
+    uuid: string;
+    party: PartyId;
+}
+
+export interface RolePermission {
+    permissionId: number;
+    uuid: string;
+    grantedPrivilege: string;
+    object: CcmObjectId;
+    creationUser: PartyId;
+    creationDate: Date;
+    creationIp: string;
+    inheritedFrom: CcmObjectId;
+}
+
+export interface UserData {
+    partyId: number;
+    uuid: string;
+    name: string;
+    givenName: string;
+    familyName: string;
+    primaryEmailAddress: EmailAddressData;
+    emailAddresses: EmailAddressData[];
+    banned: boolean;
+    passwordResetRequired: boolean;
+    groupMemberships: UserGroupMembership[];
+    roleMemberships: PartyRoleMembership[];
+}
+
+export interface UserGroupMembership {
+    membershipId: number;
+    uuid: string;
+    group: PartyId;
+}
diff --git a/ccm-core-apiclient/src/main/typescript/entities/workflow.ts b/ccm-core-apiclient/src/main/typescript/entities/workflow.ts
new file mode 100644
index 000000000..9e88c74f3
--- /dev/null
+++ b/ccm-core-apiclient/src/main/typescript/entities/workflow.ts
@@ -0,0 +1,10 @@
+import {
+    LocalizedString,
+    assertProperties,
+} from "@libreccm/ccm-apiclient-commons";
+
+export interface TaskId {
+    taskId: number;
+    uuid: string;
+    label: LocalizedString;
+}
\ No newline at end of file