Task: Manage folders automatically in Dropbox

n8n workflow JSON:
{"nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[50,200],"parameters":{},"typeVersion":1},{"name":"Dropbox","type":"n8n-nodes-base.dropbox","position":[250,200],"parameters":{"path":"/n8n","resource":"folder"},"credentials":{"dropboxApi":"dropbox_accesstoken"},"typeVersion":1},{"name":"Dropbox1","type":"n8n-nodes-base.dropbox","position":[650,200],"parameters":{"path":"/n8n/file.png","binaryData":true},"credentials":{"dropboxApi":"dropbox_accesstoken"},"typeVersion":1},{"name":"HTTP Request","type":"n8n-nodes-base.httpRequest","position":[450,200],"parameters":{"url":"https://n8n.io/n8n-logo.png","options":{},"responseFormat":"file"},"typeVersion":1},{"name":"Dropbox2","type":"n8n-nodes-base.dropbox","position":[850,200],"parameters":{"path":"/n8n","resource":"folder","operation":"list"},"credentials":{"dropboxApi":"dropbox_accesstoken"},"typeVersion":1}],"connections":{"Dropbox":{"main":[[{"node":"HTTP Request","type":"main","index":0}]]},"Dropbox1":{"main":[[{"node":"Dropbox2","type":"main","index":0}]]},"HTTP Request":{"main":[[{"node":"Dropbox1","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"Dropbox","type":"main","index":0}]]}}}