# ServerDataPushResponseUnion

Location: [gRPC API](https://developer.m-files.com/APIs/gRPC-API/index.md) > [Reference](https://developer.m-files.com/APIs/gRPC-API/Reference/index.md) > [Messages](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/index.md)

HTML version: https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ServerDataPushResponseUnion/

Union for various data push response data (depends on request type).

- **Full name:** `MFiles.ServerDataPushResponseUnion`
- **Proto file:** [`mfiles/structs.proto`](https://developer.m-files.com/APIs/gRPC-API/downloads/proto/mfiles/structs.proto)

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## Fields

| Field | Type | Number | Description |
|---|---|---|---|
| <a id="f-electronic_signature_request"></a>`electronic_signature_request` | [`ElectronicSignatureResponse`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ElectronicSignatureResponse/index.md) (oneof data) | 1 | Electronic signature response. |
| <a id="f-extension_authentication_request"></a>`extension_authentication_request` | [`ExtensionAuthenticationResponseFromClient`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ExtensionAuthenticationResponseFromClient/index.md) (oneof data) | 2 | Extension authentication response. Encrypted with the server public key. |

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## Used in fields

- [`ServerDataPushResponse.data`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ServerDataPushResponse/index.md#f-data): The actual message data.