Gets registration settings or nothing if there are no settings associated with the registration.

{
  "type": "object",
  "properties": {
    "apikey": {
      "type": "string"
    },
    "id": {
      "type": "string",
      "format": "uuid"
    }
  },
  "required": [
    "apikey",
    "id"
  ],
  "additionalProperties": false
}