# decodePieceMetadataFromExtraData

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

Defined in: [packages/synapse-core/src/mocks/pdp.ts:270](https://github.com/FilOzone/synapse-sdk/blob/78c167418083a17417ccf3994e37407987d6251b/packages/synapse-core/src/mocks/pdp.ts#L270)

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/)