Task: Create a customer and add them to a segment in Customer.io

n8n workflow:
{"id":"32","name":"Create a customer and add them to a segment in Customer.io","nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[440,260],"parameters":{},"typeVersion":1},{"name":"CustomerIo","type":"n8n-nodes-base.customerIo","position":[650,260],"parameters":{"id":"2","additionalFields":{"customProperties":{"customProperty":[{"key":"Name","value":"n8n"}]}}},"credentials":{"customerIoApi":"cust"},"typeVersion":1},{"name":"CustomerIo1","type":"n8n-nodes-base.customerIo","position":[840,260],"parameters":{"resource":"segment","customerIds":"={{$node[\"CustomerIo\"].json[\"id\"]}}"},"credentials":{"customerIoApi":"cust"},"typeVersion":1}],"active":false,"settings":{},"connections":{"CustomerIo":{"main":[[{"node":"CustomerIo1","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"CustomerIo","type":"main","index":0}]]}}}