Task: Check To Do on Notion and send message on Slack

n8n workflow JSON:
{"id":"331","name":"Check To Do on Notion and send message on Slack","nodes":[{"name":"Cron","type":"n8n-nodes-base.cron","position":[470,320],"parameters":{"triggerTimes":{"item":[{"hour":8}]}},"typeVersion":1},{"name":"NoOp","type":"n8n-nodes-base.noOp","position":[1120,420],"parameters":{},"typeVersion":1},{"name":"Get To Dos","type":"n8n-nodes-base.notion","position":[670,320],"parameters":{"blockId":"bafdscf","resource":"block","operation":"getAll","returnAll":true},"credentials":{"notionApi":""},"typeVersion":1},{"name":"If task assigned to Harshil?","type":"n8n-nodes-base.if","notes":"Check if the task is incomplete","position":[870,320],"parameters":{"conditions":{"string":[{"value1":"={{$json[\"to_do\"][\"text\"][1][\"mention\"][\"user\"][\"name\"]}}","value2":"NAME"}],"boolean":[{"value1":"={{$json[\"to_do\"][\"checked\"]}}"}]}},"notesInFlow":true,"typeVersion":1},{"name":"Create a Direct Message","type":"n8n-nodes-base.slack","position":[1120,220],"parameters":{"options":{"users":["U01JXLAJ6SE"]},"resource":"channel","operation":"open"},"credentials":{"slackApi":""},"executeOnce":false,"typeVersion":1},{"name":"Send a Direct Message","type":"n8n-nodes-base.slack","position":[1320,220],"parameters":{"text":"# TO DO","channel":"={{$json[\"id\"]}}","attachments":[{"title":"=☑️ {{$node[\"If task assigned to Harshil?\"].json[\"to_do\"][\"text\"][0][\"text\"][\"content\"]}}"}],"otherOptions":{"mrkdwn":true}},"credentials":{"slackApi":""},"typeVersion":1}],"active":true,"settings":{},"connections":{"Cron":{"main":[[{"node":"Get To Dos","type":"main","index":0}]]},"Get To Dos":{"main":[[{"node":"If task assigned to Harshil?","type":"main","index":0}]]},"Create a Direct Message":{"main":[[{"node":"Send a Direct Message","type":"main","index":0}]]},"If task assigned to Harshil?":{"main":[[{"node":"Create a Direct Message","type":"main","index":0}],[{"node":"NoOp","type":"main","index":0}]]}}}