Get identifier

curl --request GET \
  --url https://vault-api.stardust.gg/v1/profile/identifier/{id} \
  --header 'x-api-key: <api-key>'

{
  "rootUserId": "<string>",
  "profileId": "<string>",
  "service": "<string>",
  "value": "<string>",
  "createdAt": 1,
  "type": "custom",
  "id": "<string>"
}