> ## Documentation Index
> Fetch the complete documentation index at: https://docs.genlabs.co/llms.txt
> Use this file to discover all available pages before exploring further.

# ActivationStart

Defined in: [metacomputer/gen-framework/client-and-test-utils/client-sdk-ts/packages/client-sdk/src/rpc-types/types.ts:720](https://github.com/gen-bc/gen/blob/main/metacomputer/gen-framework/client-and-test-utils/client-sdk-ts/packages/client-sdk/src/rpc-types/types.ts#L720)

Activation start event payload.

## Properties

### activation

> **activation**: [`Base64Bytes`](/reference/sdk/typescript/index/type-aliases/Base64Bytes)

Defined in: [metacomputer/gen-framework/client-and-test-utils/client-sdk-ts/packages/client-sdk/src/rpc-types/types.ts:724](https://github.com/gen-bc/gen/blob/main/metacomputer/gen-framework/client-and-test-utils/client-sdk-ts/packages/client-sdk/src/rpc-types/types.ts#L724)

The activation that started (internal or external), encoded as base64 bytes.

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### entity\_sequence\_number

> **entity\_sequence\_number**: [`U64String`](/reference/sdk/typescript/index/type-aliases/U64String)

Defined in: [metacomputer/gen-framework/client-and-test-utils/client-sdk-ts/packages/client-sdk/src/rpc-types/types.ts:728](https://github.com/gen-bc/gen/blob/main/metacomputer/gen-framework/client-and-test-utils/client-sdk-ts/packages/client-sdk/src/rpc-types/types.ts#L728)

Entity sequence number for ordering within the entity.