Task: Send automated campaigns in Sendy

n8n workflow:
{"id":"14","name":"Add a subscriber to a list and create and send a campaign","nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[250,300],"parameters":{},"typeVersion":1},{"name":"Sendy","type":"n8n-nodes-base.sendy","position":[450,300],"parameters":{"email":"harshil@n8n.io","listId":"2","additionalFields":{"name":"Harshil"}},"credentials":{"sendyApi":"sendy"},"typeVersion":1},{"name":"Sendy1","type":"n8n-nodes-base.sendy","position":[650,300],"parameters":{"title":"Welcome to n8n","replyTo":"docs@n8n.io","subject":"Welcome to n8n","fromName":"n8n","htmlText":"<body>\n  <p>Hey!</p>\n  <p>Welcome to n8n!</p>\n</body>","resource":"campaign","fromEmail":"docs@n8n.io","sendCampaign":true,"additionalFields":{"listIds":"2"}},"credentials":{"sendyApi":"sendy"},"typeVersion":1}],"active":false,"settings":{},"connections":{"Sendy":{"main":[[{"node":"Sendy1","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"Sendy","type":"main","index":0}]]}}}