How can I send POST request with fields other than body or qs?

[RSale]

Bulk Exporting Trace Data - Docs by LangChain

I am trying to setup a langsmith to GCS destination in n8n. I have python code that works but I am new to n8n and I was trying to make a workflow for this.

Here is the curl command that I am trying to implement.

curl --request POST \
  --url 'https://api.smith.langchain.com/api/v1/bulk-exports/destinations' \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: YOUR_API_KEY' \
  --header 'X-Tenant-Id: YOUR_WORKSPACE_ID' \
  --data '{
    "destination_type": "s3",
    "display_name": "My S3 Destination",
    "config": {
      "bucket_name": "your-s3-bucket-name",
      "prefix": "root_folder_prefix",
      "region": "your aws s3 region",
      "endpoint_url": "your endpoint url for s3 compatible buckets"
    },
    "credentials": {
      "access_key_id": "YOUR_S3_ACCESS_KEY_ID",
      "secret_access_key": "YOUR_S3_SECRET_ACCESS_KEY"
    }
  }'

We are self hosting n8n and I cannot create variables if I understood correctly. I am concerned with protecting my credentials.

I can create a custom auth including the headers. But I cannot add the data part.

{
    “headers”: {
       “X-API-Key”:“YOUR_API_KEY”,
       “X-Tenant-Id”:“YOUR_WORKSPACE_ID”}
}

{  
  "headers": {
    "X-API-Key":"YOUR_API_KEY",
    "X-Tenant-Id":"YOUR_WORKSPACE_ID"
  },
  "body":{
    "data": {
      "destination_type": "s3",
      "display_name": "My S3 Destination",
      "config": {
        "bucket_name": "your-s3-bucket-name",
        "prefix": "root_folder_prefix",
        "endpoint_url": "your endpoint url for s3 compatible buckets"
      },
      "credentials": {
        "access_key_id": "YOUR_S3_ACCESS_KEY_ID",
        "secret_access_key": "YOUR_S3_SECRET_ACCESS_KEY"
      }
    }
  }
}

Is it possible to send something like this with the custom auth?

[jabbson]

sure, the body would go here: