> ## 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.

# EntityId

> `const` **EntityId**: [`TupleDefinition`](/reference/sdk/typescript/index/interfaces/TupleDefinition)\<`"EntityId"`, readonly \[[`TupleDefinition`](/reference/sdk/typescript/index/interfaces/TupleDefinition)\<`"H256"`, readonly \[[`TupleDefinition`](/reference/sdk/typescript/index/interfaces/TupleDefinition)\<`"PTH256"`, readonly \[[`GenType`](/reference/sdk/typescript/index/interfaces/GenType)\<`Uint8Array`\<`ArrayBufferLike`>, `Schema`>]>]>]>

Defined in: [metacomputer/gen-framework/client-and-test-utils/client-sdk-ts/packages/client-sdk/src/schemas/system-types.ts:23](https://github.com/gen-bc/gen/blob/main/metacomputer/gen-framework/client-and-test-utils/client-sdk-ts/packages/client-sdk/src/schemas/system-types.ts#L23)