Task: Create a coupon on Paddle

n8n workflow:
{"id":"54","name":"Create a coupon on Paddle","nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[550,260],"parameters":{},"typeVersion":1},{"name":"Paddle","type":"n8n-nodes-base.paddle","position":[750,260],"parameters":{"discountAmount":2,"additionalFields":{"couponCode":"n8n-docs"}},"credentials":{"paddleApi":"paddle"},"typeVersion":1}],"active":false,"settings":{},"connections":{"Paddle":{"main":[[]]},"On clicking 'execute'":{"main":[[{"node":"Paddle","type":"main","index":0}]]}}}