curl --request GET \
  --url https://api.affinity.co/v2/auth/whoami \
  --header 'Authorization: Bearer <token>'

{
  "grant": {
    "createdAt": "2023-01-01T00:00:00Z",
    "scopes": [
      "api"
    ],
    "type": "api-key"
  },
  "user": {
    "firstName": "John",
    "lastName": "Smith",
    "emailAddress": "john.smith@contoso.com",
    "id": 1
  },
  "tenant": {
    "name": "Contoso Ltd.",
    "subdomain": "contoso",
    "id": 1
  }
}