Workflow: configure an n8n workflow for Manual Http Automation Webhook
Integrations: httpRequest, manualTrigger, nextCloud

{"nodes": [{"name": "On clicking 'execute'", "type": "n8n-nodes-base.manualTrigger", "position": [20, 180], "parameters": {}, "typeVersion": 1}, {"name": "HTTP Request", "type": "n8n-nodes-base.httpRequest", "position": [420, 180], "parameters": {"url": "https://n8n.io/n8n-logo.png", "options": {}, "responseFormat": "file"}, "typeVersion": 1}, {"name": "NextCloud", "type": "n8n-nodes-base.nextCloud", "position": [220, 180], "parameters": {"path": "n8n", "resource": "folder"}, "credentials": {"nextCloudApi": "nextcloud_creds"}, "typeVersion": 1}, {"name": "NextCloud1", "type": "n8n-nodes-base.nextCloud", "position": [620, 180], "parameters": {"path": "n8n/logo.png", "binaryDataUpload": true}, "credentials": {"nextCloudApi": "nextcloud_creds"}, "typeVersion": 1}, {"name": "NextCloud2", "type": "n8n-nodes-base.nextCloud", "position": [820, 180], "parameters": {"path": "n8n", "resource": "folder", "operation": "list"}, "credentials": {"nextCloudApi": "nextcloud_creds"}, "typeVersion": 1}], "connections": {"NextCloud": {"main": [[{"node": "HTTP Request", "type": "main", "index": 0}]]}, "NextCloud1": {"main": [[{"node": "NextCloud2", "type": "main", "index": 0}]]}, "HTTP Request": {"main": [[{"node": "NextCloud1", "type": "main", "index": 0}]]}, "On clicking 'execute'": {"main": [[{"node": "NextCloud", "type": "main", "index": 0}]]}}}