{
    "url": "/contacts/{{parameters.contact_id}}",
    "method": "PATCH",
    "body": {
        "first_name": "{{parameters.first_name}}",
        "last_name": "{{parameters.last_name}}",
        "company": "{{parameters.company}}",
        "phone": "{{parameters.phone}}",
        "subscribed": "{{parameters.subscribed}}",
        "campaigns": "{{parameters.campaigns}}",
        "custom_fields": "{{if(length(parameters.custom_fields) > 0, toCollection(parameters.custom_fields, 'key', 'value'))}}"
    },
    "response": {
        "output": "{{body}}"
    }
}