Task: Connect Todoist project to Slack channel

n8n workflow:
{"id":"3","name":"TODOIST_TO_SLACK","nodes":[{"name":"Webhook","type":"n8n-nodes-base.webhook","notes":"Make webhook calback on todoist\nhttps://developer.todoist.com/appconsole.html","position":[400,300],"parameters":{"path":"todo","options":{},"httpMethod":"POST"},"typeVersion":1,"alwaysOutputData":false},{"name":"Switch","type":"n8n-nodes-base.switch","notes":"Chose todoist status","position":[800,180],"parameters":{"rules":{"rules":[{"value2":"item:added"},{"output":1,"value2":"item:completed"}]},"value1":"={{$node[\"Webhook\"].json[\"body\"][\"event_name\"]}}","dataType":"string"},"typeVersion":1},{"name":"Slack-item:added","type":"n8n-nodes-base.slack","notes":"Customize this text","position":[1050,100],"parameters":{"text":"=Я поставил себе задачу: {{$node[\"Webhook\"].json[\"body\"][\"event_data\"][\"content\"]}}","channel":"хостинг","attachments":[],"otherOptions":{},"authentication":"oAuth2"},"credentials":{"slackOAuth2Api":"yarpersru"},"typeVersion":1},{"name":"Slack-item:completed","type":"n8n-nodes-base.slack","position":[1050,260],"parameters":{"text":"=Задача выполнена: {{$node[\"Webhook\"].json[\"body\"][\"event_data\"][\"content\"]}} :grinning_face_with_one_large_and_one_small_eye:","channel":"хостинг","attachments":[],"otherOptions":{},"authentication":"oAuth2"},"credentials":{"slackOAuth2Api":"yarpersru"},"typeVersion":1},{"name":"IF","type":"n8n-nodes-base.if","notes":"Insert todoist project_id for accept next","position":[620,300],"parameters":{"conditions":{"string":[{"value1":"={{$node[\"Webhook\"].json[\"body\"][\"event_data\"][\"project_id\"]}}","value2":"2228679517","operation":"contains"},{"value1":"={{$node[\"Webhook\"].json[\"body\"][\"event_data\"][\"project_id\"]}}","value2":"2228761105","operation":"contains"},{"value1":"={{$node[\"Webhook\"].json[\"body\"][\"event_data\"][\"project_id\"]}}","value2":"1768175661","operation":"contains"},{"value1":"={{$node[\"Webhook\"].json[\"body\"][\"event_data\"][\"project_id\"]}}","value2":"2228802583","operation":"contains"}]},"combineOperation":"any"},"typeVersion":1}],"active":true,"settings":{"timezone":"Europe/Moscow","saveManualExecutions":false,"saveDataErrorExecution":"none","saveDataSuccessExecution":"none"},"connections":{"IF":{"main":[[{"node":"Switch","type":"main","index":0}]]},"Switch":{"main":[[{"node":"Slack-item:added","type":"main","index":0}],[{"node":"Slack-item:completed","type":"main","index":0}]]},"Webhook":{"main":[[{"node":"IF","type":"main","index":0}]]},"Slack-item:added":{"main":[[]]}}}