mutation AddCollectionAssets {
  addCollectionAssets(
    input: {
      collectionId: "…"
      assetIds: ["…"]
    }
  ) {
    __typename
    collection {
      name
      id
      assets {
        total
        page
        limit
        hasNextPage
        items { id }
      }
      currentUserPermissions {
        canAddAssets
        canRemoveAssets
      }
    }
  }
}