# decodePieceMetadataFromExtraData

> **decodePieceMetadataFromExtraData**(`extraData`): [`PieceMetadataCapture`](/reference/filoz/synapse-core/mocks/namespaces/pdp/interfaces/piecemetadatacapture/)

Defined in: [packages/synapse-core/src/mocks/pdp.ts:269](https://github.com/FilOzone/synapse-sdk/blob/b11ef4f7e3c201d8bba29973a09628063e6547b1/packages/synapse-core/src/mocks/pdp.ts#L269)

Helper to decode piece metadata from extraData
Format: (uint256 nonce, string[][] keys, string[][] values, bytes signature)

## Parameters

| Parameter | Type |
| ------ | ------ |
| `extraData` | `` `0x${string}` `` |

## Returns

[`PieceMetadataCapture`](/reference/filoz/synapse-core/mocks/namespaces/pdp/interfaces/piecemetadatacapture/)