Task: Insert and read data from Google Sheets

n8n workflow JSON:
{"nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[250,300],"parameters":{},"typeVersion":1},{"name":"Google Sheets","type":"n8n-nodes-base.googleSheets","position":[650,300],"parameters":{"range":"A:B","options":{},"sheetId":"1ijnLMy6htVTX_68e2lsdGYiA5_6ZG72FXUbxAy_DC94","operation":"append","authentication":"oAuth2"},"credentials":{"googleSheetsOAuth2Api":"Amudhan-GoogleSheets"},"typeVersion":1},{"name":"Set","type":"n8n-nodes-base.set","position":[450,300],"parameters":{"values":{"number":[{"name":"id"}],"string":[{"name":"name","value":"n8n"}]},"options":{}},"typeVersion":1,"alwaysOutputData":true},{"name":"Google Sheets1","type":"n8n-nodes-base.googleSheets","position":[850,300],"parameters":{"range":"A:B","options":{},"sheetId":"1ijnLMy6htVTX_68e2lsdGYiA5_6ZG72FXUbxAy_DC94","authentication":"oAuth2"},"credentials":{"googleSheetsOAuth2Api":"Amudhan-GoogleSheets"},"typeVersion":1}],"connections":{"Set":{"main":[[{"node":"Google Sheets","type":"main","index":0}]]},"Google Sheets":{"main":[[{"node":"Google Sheets1","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"Set","type":"main","index":0}]]}}}