Retrieve a user

{
  "avatar_url": "http://example.com",
  "display_name": "string",
  "email": "user@example.com",
  "external_id": "string",
  "first_seen_at": "2019-08-24T14:15:22Z",
  "id": "string",
  "identity_type": "string",
  "last_seen_at": "2019-08-24T14:15:22Z",
  "object": "user"
}

{
  "message": "limit must be an integer between 1 and 100.",
  "name": "bad_request"
}

{
  "message": "The supplied API key is invalid or revoked.",
  "name": "unauthorized"
}

{
  "message": "This API key does not have the required users:read permission.",
  "name": "insufficient_scope"
}

{
  "message": "The requested resource was not found.",
  "name": "not_found"
}

{
  "message": "Too many requests. Please try again later.",
  "name": "rate_limited"
}

{
  "message": "Internal server error.",
  "name": "internal_server_error"
}

{
  "message": "The API is temporarily unavailable.",
  "name": "service_unavailable"
}