curl --request POST \
  --url https://recoup-api.vercel.app/api/accounts/artists \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "email": "jsmith@example.com",
  "artistId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

{
  "success": true
}