Task: Get first and last names from Facebook Graph API

n8n workflow JSON:
{"nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[250,300],"parameters":{},"typeVersion":1},{"name":"Facebook Graph API","type":"n8n-nodes-base.facebookGraphApi","position":[450,300],"parameters":{"node":"me","options":{"fields":{"field":[{"name":"last_name"},{"name":"first_name"}]}}},"credentials":{"facebookGraphApi":"graph_credentials"},"typeVersion":1}],"connections":{"On clicking 'execute'":{"main":[[{"node":"Facebook Graph API","type":"main","index":0}]]}}}