Task: Delete old tracks after a given time from Spotify playlist 

n8n workflow JSON:
{"nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[250,300],"parameters":{},"typeVersion":1},{"name":"Spotify Get Tracks","type":"n8n-nodes-base.spotify","position":[480,300],"parameters":{"id":"spotify:playlist:6LhcKhGWWYg350vz9fP0FA","resource":"playlist","operation":"getTracks","returnAll":true},"credentials":{"spotifyOAuth2Api":"N8N"},"typeVersion":1},{"name":"added_at -> timestamp","type":"n8n-nodes-base.dateTime","position":[680,300],"parameters":{"value":"={{$json[\"added_at\"]}}","custom":true,"options":{},"toFormat":"X","dataPropertyName":"timestamp"},"typeVersion":1},{"name":"Get Current Date","type":"n8n-nodes-base.function","position":[890,300],"parameters":{"functionCode":"const newItems = [];\nvar current = new Date();\n\nfor(let i=0; i<items.length; i++) {\n\nitems[i].json.current = current;\nnewItems.push({json: items[i].json});\n\n}\n\nreturn newItems;\n"},"typeVersion":1},{"name":"Spotify Delete Old Tracks","type":"n8n-nodes-base.spotify","position":[1480,290],"parameters":{"id":"spotify:playlist:6LhcKhGWWYg350vz9fP0FA","trackID":"={{$json[\"track\"][\"uri\"]}}","resource":"playlist","operation":"delete"},"credentials":{"spotifyOAuth2Api":"N8N"},"typeVersion":1},{"name":"current date -> timestamp","type":"n8n-nodes-base.dateTime","position":[1080,300],"parameters":{"value":"={{$json[\"current\"]}}","custom":true,"options":{},"toFormat":"X","dataPropertyName":"timestampcurrent"},"typeVersion":1},{"name":"IF (Entry Older Than)","type":"n8n-nodes-base.if","position":[1280,300],"parameters":{"conditions":{"number":[{"value1":"={{$json[\"timestampcurrent\"] - $json[\"timestamp\"]}}","value2":2592000,"operation":"largerEqual"}]}},"typeVersion":1}],"connections":{"Get Current Date":{"main":[[{"node":"current date -> timestamp","type":"main","index":0}]]},"Spotify Get Tracks":{"main":[[{"node":"added_at -> timestamp","type":"main","index":0}]]},"IF (Entry Older Than)":{"main":[[{"node":"Spotify Delete Old Tracks","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"Spotify Get Tracks","type":"main","index":0}]]},"added_at -> timestamp":{"main":[[{"node":"Get Current Date","type":"main","index":0}]]},"current date -> timestamp":{"main":[[{"node":"IF (Entry Older Than)","type":"main","index":0}]]}}}