# BookDepthMessage
## Properties
**timestamp** | **i64** | System timestamp in milliseconds when this BookDepth was emitted. |
**previous_timestamp** | **i64** | Timestamp in ms of the previous BookDepth event for this product. |
**product_id** | [**uuid::Uuid**](uuid::Uuid.md) | Identifier of the product. |
**asks** | [**Vec<Vec<String>>**](Vec.md) | Array of ask levels as [price, quantity] string tuples. |
**bids** | [**Vec<Vec<String>>**](Vec.md) | Array of bid levels as [price, quantity] string tuples. |
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