All committers have signed the CLA.

First, thanks for contributing this fix! Generally looks great.

Question about healthchecks.io -- is there a feature of healthchecks that depends on the JSON text field / @inode64 is there a reason you originally used json payloads with a text field set?

Will this switch break an existing use case?

When copying another hook I used the same structures that used json, then I noticed the problem that they were not displayed correctly, I tried using a json to text converter internally in healthchecks, but in the end I think it is better that backrest send the body correctly

Sgtm, thanks for the context! The JSON text field just happens to be the payload structure for two of the messaging services used -- makes sense that it confusingly looked like a pattern to follow. Given that, I think I feel reasonably comfortable making this change without a migration / providing a toggle. We can just switch over.

I’ll mark this as a “feat” as it’s slightly breaking but should be an improvement for most users. It deserves to be tracked as a minor version change.