How to format the API key in headers for Speakatoo integration?

I’m working on integrating Speakatoo’s services and need guidance on the correct way to include the API key in the headers. Does it require a specific format like Authorization: Bearer <API_KEY> or another structure? Any insights or examples would be helpful. Thanks in advance!

It’s used in the request headers like this:

You need to pass API Key in the HTTP Authorization request header as ‘X-API-KEY: YOUR-API-KEY’. Your Content-Type header should be ‘Content-Type: application/json’.

I’ve never used this service so I’m just repeating what the documentation is saying.