curl --request POST \
  --url https://api.indoralabs.com/files/attach \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "caseId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "fileIds": [
    "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  ]
}
'

{
  "ok": true
}