diff --git a/src/models/change-message.model.ts b/src/models/change-message.model.ts
new file mode 100644
index 0000000..ec1f881
--- /dev/null
+++ b/src/models/change-message.model.ts
@@ -0,0 +1,7 @@
+import { RedmineTypes } from '@app/event-emitter/models/redmine-types';
+
+export type ChangeMessage = {
+  changes_message?: string | null;
+  notification_message?: string | null;
+  recipient?: RedmineTypes.PublicUser | null;
+};
diff --git a/src/models/change.model.ts b/src/models/change.model.ts
new file mode 100644
index 0000000..affdbba
--- /dev/null
+++ b/src/models/change.model.ts
@@ -0,0 +1,27 @@
+import { RedmineTypes } from '@app/event-emitter/models/redmine-types';
+import { ChangeMessage } from './change-message.model';
+
+export class Change {
+  initiator?: RedmineTypes.PublicUser;
+  dev?: RedmineTypes.PublicUser;
+  cr?: RedmineTypes.PublicUser;
+  qa?: RedmineTypes.PublicUser;
+  current_user?: RedmineTypes.PublicUser;
+  author?: RedmineTypes.PublicUser;
+  issue_id: number;
+  issue_url: string;
+  issue_tracker: string;
+  issue_subject: string;
+  journal_note?: string;
+  old_status?: {
+    id?: number;
+    name?: string;
+  } | null;
+  new_status?: {
+    id?: number;
+    name?: string;
+  };
+  created_on: string;
+  created_on_timestamp: number | null;
+  messages: ChangeMessage[];
+}