Request Entity Too Large: what's the limit?

I’m using the API to add a record with a long text/multi-line text field type. When I try to add a row with a very large amount of text in this field, I get back “413 Request Entity Too Large.”

It’s fine with me that there’s a limit, I’m just wondering what it is so I can truncate or otherwise limit the source text before adding the row.

Thanks,
Kris

This is an error from Nginx. What server do you use? Do you use a self-hosted one or cloud.seatable.io?

This is from cloud.seatable.io

The limitation is 1MB.