Request donation management link

curl --request POST \
  --url https://api.fluxer.app/v1/donations/request-link \
  --header 'Content-Type: application/json' \
  --data '
{
  "email": "jsmith@example.com"
}
'

{
  "code": "ACCESS_DENIED",
  "message": "<string>",
  "errors": [
    {
      "path": "<string>",
      "message": "<string>",
      "code": "<string>"
    }
  ]
}