Task: Receive Google Sheet data via REST API

n8n workflow JSON:
{"nodes":[{"name":"Google Sheets","type":"n8n-nodes-base.googleSheets","position":[700,300],"parameters":{"range":"Problems!A:D","options":{},"sheetId":"17fzSFl1BZ1njldTfp5lvh8HtS0-pNXH66b7qGZIiGRU"},"credentials":{"googleApi":""},"typeVersion":1},{"name":"Webhook","type":"n8n-nodes-base.webhook","position":[500,300],"parameters":{"path":"webhook","options":{},"responseData":"allEntries","responseMode":"lastNode"},"typeVersion":1}],"connections":{"Webhook":{"main":[[{"node":"Google Sheets","type":"main","index":0}]]}}}