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How should I write this Key-value pair for updating the ConvertKit custom field? Is this the correct way:

{\"last_name": "xyz"\}

I can’t really tell from https://developers.convertkit.com/#update-subscriber

I’ve tested the rest of the setting on this webhook with a first_name field, and that works. So I know for sure it’s how I’m writing this custom field that’s causing the error. 

 

 

Hi @gaorii 

Try using this Zap action: Webhooks - Custom Request

Method: PUT

Make sure to set the Headers

Content-Type: application/json

 

Body JSON

{
    "api_secret": "<your_secret_api_key>",
    "first_name": "Jon",
    "email_address": "jonsnow@example.com",
    "fields": {
        "last_name": "Snow"
    }
}

 

 

 

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