Composing Multiple Structs in Effect Typescript

Hi, is it possible to compose multiple structs? Like I have a field called meta, and in that there's two fields 'meta.request_id' and 'meta.timestamp' and these fields will be there always and additional fields can be there too so is there any way to extend meta field? For example some helper function like { meta: Schema.mergeStruct(DefaultMetaFields, PaginationMetaFields) }