instantly.ai set up in n8n through HTTP request node

I am struggling to correctly set up the HTTP Request Node in n8n for adding leads to the Instantly.ai lead list. I referred to the API documentation and attempted to configure the node, but I am receiving errors, likely due to incorrect parameters or payload format. I want to ensure that my workflow adds leads seamlessly to the correct lead list using their API and triggers the campaign successfully afterward.

when the loop gets over then it run an google sheet node which gets all rows go that sheet we need to transfer this all into instantly for that we need to first create an lead from proper API endpoints for each item that is present in the google sheet means for all the leads present in the sheet then we need to create next request for creating an lead list then after this we need to request for move all that leads to that lead list we created just now then we request to create an campaign then request to send that lead list into that campaign created then last request should be the campaign live.

Can anyone provide a detailed guide to properly set up the HTTP Request Node in n8n for adding leads to an Instantly.ai lead list? I need accurate instructions, including the correct API endpoint, headers, parameters, and payload format, along with a step-by-step walkthrough for troubleshooting common errors in the setup. for context i have growth plan of instantly.ai.

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