Task: Todoist webhook trigger to capture completed Task

n8n workflow JSON:
{"nodes":[{"name":"Webhook","type":"n8n-nodes-base.webhook","notes":"Make webhook calback on todoist\nhttps://developer.todoist.com/appconsole.html","position":[100,510],"parameters":{"path":"todoist","options":{},"httpMethod":"POST"},"typeVersion":1,"alwaysOutputData":false},{"name":"Set","type":"n8n-nodes-base.set","position":[440,510],"parameters":{"values":{"string":[{"name":"Task Name","value":"= {{$json[\"body\"][\"event_data\"][\"content\"]}}"},{"name":"Project ID","value":"={{$json[\"body\"][\"event_data\"][\"project_id\"]}}"},{"name":"Date task added","value":"={{$json[\"body\"][\"event_data\"][\"date_added\"]}}"},{"name":"Date of Completion","value":"={{$json[\"Date completed\"]}}"},{"name":"Task URL","value":"={{$json[\"body\"][\"event_data\"][\"url\"]}}"}]},"options":{},"keepOnlySet":true},"typeVersion":1},{"name":"Google Sheets","type":"n8n-nodes-base.googleSheets","position":[630,510],"parameters":{"range":"A:E","options":{"valueInputMode":"RAW"},"sheetId":"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx","operation":"append"},"credentials":{"googleApi":{"id":"8","name":"Google account"}},"typeVersion":1},{"name":"Date & Time","type":"n8n-nodes-base.dateTime","position":[280,510],"parameters":{"value":"={{$json[\"body\"][\"event_data\"][\"date_completed\"]}}","options":{"toTimezone":"Asia/Qatar"},"dataPropertyName":"Date completed"},"typeVersion":1}],"connections":{"Set":{"main":[[{"node":"Google Sheets","type":"main","index":0}]]},"Webhook":{"main":[[{"node":"Date & Time","type":"main","index":0}]]},"Date & Time":{"main":[[{"node":"Set","type":"main","index":0}]]}}}