Task: Create, update and get a subscriber using the MailerLite node

n8n workflow JSON:
{"id":"96","name":"Create, update and get a subscriber using the MailerLite node","nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[310,300],"parameters":{},"typeVersion":1},{"name":"MailerLite","type":"n8n-nodes-base.mailerLite","position":[510,300],"parameters":{"email":"harshil@n8n.io","additionalFields":{"name":"Harshil"}},"credentials":{"mailerLiteApi":"mailerlite"},"typeVersion":1},{"name":"MailerLite1","type":"n8n-nodes-base.mailerLite","position":[710,300],"parameters":{"operation":"update","subscriberId":"={{$node[\"MailerLite\"].json[\"email\"]}}","updateFields":{"customFieldsUi":{"customFieldsValues":[{"value":"Berlin","fieldId":"city"}]}}},"credentials":{"mailerLiteApi":"mailerlite"},"typeVersion":1},{"name":"MailerLite2","type":"n8n-nodes-base.mailerLite","position":[910,300],"parameters":{"operation":"get","subscriberId":"={{$node[\"MailerLite\"].json[\"email\"]}}"},"credentials":{"mailerLiteApi":"mailerlite"},"typeVersion":1}],"active":false,"settings":{},"connections":{"MailerLite":{"main":[[{"node":"MailerLite1","type":"main","index":0}]]},"MailerLite1":{"main":[[{"node":"MailerLite2","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"MailerLite","type":"main","index":0}]]}}}