1. Extract the `doc_token` from the Feishu document URL.
2. Determine the desired action (read, write, append, create, list_blocks, get_block, update_block, delete_block).
3. Construct the appropriate JSON payload with the `action` and necessary parameters (e.g., `doc_token`, `content`, `block_id`).
4. Execute the API call to Feishu with the constructed payload.
5. Parse the response from Feishu.
6. If reading, check the `hint` field for structured content and use `list_blocks` if necessary.
7. Return the relevant information to the user.