Task: Send Telegram messages on RSS feed read

n8n workflow JSON:
{"id":2,"name":"RSS to Telegram","nodes":[{"name":"Telegram","type":"n8n-nodes-base.telegram","position":[440,30],"parameters":{"text":"=💹 #日幣匯率 {{$json[\"title\"]}}\n\n{{$json[\"link\"]}}","chatId":"","additionalFields":{}},"credentials":{"telegramApi":""},"typeVersion":1},{"name":"RSS Feed Read","type":"n8n-nodes-base.rssFeedRead","position":[-359.5,130],"parameters":{"url":""},"typeVersion":1},{"name":"Latest Read","type":"n8n-nodes-base.function","position":[-160,130],"parameters":{"functionCode":"const staticData = this.getWorkflowStaticData('global');\n\nlatestRead = staticData.latestRead;\n\nfor (let item of items) {\n  item.json.latestRead = latestRead || '2021-06-01';\n}\n\nreturn items;"},"typeVersion":1},{"name":"IF","type":"n8n-nodes-base.if","position":[40,130],"parameters":{"conditions":{"number":[{"value1":"={{new Date($node[\"Latest Read\"].data[\"latestRead\"]).getTime()}}","value2":"={{new Date($node[\"RSS Feed Read\"].data[\"isoDate\"]).getTime()}}"}],"string":[{"value1":"={{$json[\"title\"]}}","value2":"","operation":"contains"}],"boolean":[]}},"typeVersion":1},{"name":"Write Latest Read","type":"n8n-nodes-base.function","position":[240,30],"parameters":{"functionCode":"const staticData = this.getWorkflowStaticData('global');\n\nif (items.length > 0) {\n  staticData.latestRead = items[0].json.isoDate || staticData.latestRead;\n}\n\n\nreturn items;"},"typeVersion":1},{"name":"NoOp","type":"n8n-nodes-base.noOp","position":[230,270],"parameters":{},"typeVersion":1},{"name":"Cron","type":"n8n-nodes-base.cron","position":[-560,130],"parameters":{"triggerTimes":{"item":[{"mode":"everyX","value":1}]}},"typeVersion":1}],"active":true,"settings":{"timezone":"Asia/Taipei","errorWorkflow":"3","saveExecutionProgress":"DEFAULT"},"connections":{"IF":{"main":[[{"node":"Write Latest Read","type":"main","index":0}],[{"node":"NoOp","type":"main","index":0}]]},"Cron":{"main":[[{"node":"RSS Feed Read","type":"main","index":0}]]},"Latest Read":{"main":[[{"node":"IF","type":"main","index":0}]]},"RSS Feed Read":{"main":[[{"node":"Latest Read","type":"main","index":0}]]},"Write Latest Read":{"main":[[{"node":"Telegram","type":"main","index":0}]]}}}