Task: Create, update, and get a subscriber using the e-goi node

n8n workflow JSON:
{"id":"189","name":"Create, update, and get a subscriber using the e-goi node","nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[270,300],"parameters":{},"typeVersion":1},{"name":"e-goi","type":"n8n-nodes-base.egoi","position":[470,300],"parameters":{"list":1,"email":"nathan@testmail.com","additionalFields":{"first_name":"Nathan"}},"credentials":{"egoiApi":"e-goi Credentials"},"typeVersion":1},{"name":"e-goi1","type":"n8n-nodes-base.egoi","position":[670,300],"parameters":{"list":"={{$node[\"e-goi\"].parameter[\"list\"]}}","contactId":"={{$node[\"e-goi\"].json[\"base\"][\"contact_id\"]}}","operation":"update","updateFields":{"first_name":"Nat"}},"credentials":{"egoiApi":"e-goi Credentials"},"typeVersion":1},{"name":"e-goi2","type":"n8n-nodes-base.egoi","position":[870,300],"parameters":{"list":"={{$node[\"e-goi\"].parameter[\"list\"]}}","contactId":"={{$node[\"e-goi1\"].json[\"base\"][\"contact_id\"]}}","operation":"get"},"credentials":{"egoiApi":"e-goi Credentials"},"typeVersion":1}],"active":false,"settings":{},"connections":{"e-goi":{"main":[[{"node":"e-goi1","type":"main","index":0}]]},"e-goi1":{"main":[[{"node":"e-goi2","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"e-goi","type":"main","index":0}]]}}}