# Thread
This schema defines Thread entity. A Thread is a collection of posts made the users. First post that starts a thread is about a data asset created by a user. Other users can respond to this post by creating new posts in the thread. Note that bot users can also interact with a thread. A post can contains links that mentions Users or other Data Assets.
$id: https://github.com/open-metadata/OpenMetadata/blob/main/catalog-rest-service/src/main/resources/json/schema/entity/feed/thread.json
Type: `object`
## Properties
- id `required`
- Unique identifier that identifies an entity instance.
- $ref: [../../type/basic.json#/definitions/uuid](#....typebasic.jsondefinitionsuuid)
- href
- Link to the resource corresponding to this entity.
- $ref: [../../type/basic.json#/definitions/href](#....typebasic.jsondefinitionshref)
- threadTs
- Timestamp of the when the first post created the thread.
- about `required`
- Data asset about which this thread is created for with format <#E/{enties}/{entityName}/{field}/{fieldValue}.
- $ref: [../../type/basic.json#/definitions/entityLink](#....typebasic.jsondefinitionsentitylink)
- addressedTo
- User or team this thread is addressed to in format <#E/{enties}/{entityName}/{field}/{fieldValue}.
- $ref: [../../type/basic.json#/definitions/entityLink](#....typebasic.jsondefinitionsentitylink)
- posts `required`
- Type: `array`
- **_Items_**
- $ref: [#/definitions/post](#/definitions/post)
## Definitions
**_post_**
- Post within a feed.
- Type: `object`
- **_Properties_**
- message `required`
- Message in markdown format. See markdown support for more details.
- Type: `string`
- postTs
- Timestamp of the post.
- Type: `string`
- String format must be a "date-time"
- from `required`
- ID of User (regular user or a bot) posting the message.
- $ref: [../../type/basic.json#/definitions/uuid](#....typebasic.jsondefinitionsuuid)