curl --request DELETE \
  --url https://api.notifly.tech/users \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "projectId": "example_project_1234567890abcdef",
  "userId": "user_abc123",
  "userProperties": {
    "$email": "delete@example.com",
    "$phone_number": "+821012345678"
  }
}
'

{
  "data": 1
}