[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [local‑first/Protocol](https://evolu.dev/docs/api-reference/common/local-first/Protocol) › SubscriptionFlags

```ts
const SubscriptionFlags: {
  None: 0;
  Subscribe: 1;
  Unsubscribe: 2;
};
```

Defined in: [packages/common/src/local-first/Protocol.ts:442](https://github.com/evoluhq/evolu/blob/113517df8a8da4e4eed41363077878e657b22fca/packages/common/src/local-first/Protocol.ts#L442)

## Type Declaration

| Name                                            | Type | Default value | Description                              | Defined in                                                                                                                                                                         |
| ----------------------------------------------- | ---- | ------------- | ---------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <a id="property-none"></a> `None`               | `0`  | `0`           | No subscription changes for this owner.  | [packages/common/src/local-first/Protocol.ts:444](https://github.com/evoluhq/evolu/blob/113517df8a8da4e4eed41363077878e657b22fca/packages/common/src/local-first/Protocol.ts#L444) |
| <a id="property-subscribe"></a> `Subscribe`     | `1`  | `1`           | Subscribe to updates for this owner.     | [packages/common/src/local-first/Protocol.ts:446](https://github.com/evoluhq/evolu/blob/113517df8a8da4e4eed41363077878e657b22fca/packages/common/src/local-first/Protocol.ts#L446) |
| <a id="property-unsubscribe"></a> `Unsubscribe` | `2`  | `2`           | Unsubscribe from updates for this owner. | [packages/common/src/local-first/Protocol.ts:448](https://github.com/evoluhq/evolu/blob/113517df8a8da4e4eed41363077878e657b22fca/packages/common/src/local-first/Protocol.ts#L448) |