curl --request DELETE \
  --url https://eu.phrase.com/styleguide/api/v1/styleguides \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "ids": [
    "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  ]
}
'

{
  "deletedCount": 123,
  "failures": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "errorMessage": "<string>",
      "name": "<string>"
    }
  ]
}