# InboxActionContext

Type: object

## Properties

- `sessionId` (string, required)
- `ownerType` (string, required) - Empty for unassigned; otherwise user, chatbot, journey, service_account, or inbox.
- `ownerId` (string, required)
- `lastSubstantiveMessageId` (string, required)
- `substantiveVersion` (string, optional) - Opaque substantive edit generation. Return unchanged in reviewed actions; receipt updates do not change it.