action britbox_delete_item_bookmark { label: "deleteItemBookmark" description: "Unbookmark an item under the active profile." provider: britbox method: DELETE path: "/account/profile/bookmarks/{itemId}" encoding: json input: { type: "object" properties: { itemId: { type: "string" } } required: ["itemId"] additionalProperties: false } output: { type: "object" additionalProperties: true } }