Identity Extensions, reading the JWT token from Firebase

IdentityExtensions.cs

public static class IdentityExtensions
{
	public static string GetEmail(this ClaimsPrincipal current)
	{
		return GetClaimValue(current, "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress");
	}

	public static string GetName(this ClaimsPrincipal current)
	{
		return GetClaimValue(current, "name");
	}

	public static string GetUid(this ClaimsPrincipal current)
	{
		return GetClaimValue(current, "user_id");
	}

	public static string GetProfilePicture(this ClaimsPrincipal current)
	{
		return GetClaimValue(current, "picture");
	}

	public static DateTime GetExpirationDateTime(this ClaimsPrincipal current)
	{
		var timestamp = long.Parse(GetClaimValue(current, "exp"));
		var datetime = DateTimeOffset.FromUnixTimeSeconds(timestamp).UtcDateTime;
		return datetime;
	}

	private static string GetClaimValue(ClaimsPrincipal principal, string type)
	{
		return principal.Claims.FirstOrDefault(c => c.Type.Equals(type)).Value;
	}
}

SampleController.cs

public class TestController : Controller
{
	[HttpGet]
	public IActionResult Get()
	{
		var email = HttpContext.User.GetEmail();
		var name = HttpContext.User.GetName();
		var uid = HttpContext.User.GetUid();
		var profile = HttpContext.User.GetProfilePicture();
		var expiration = HttpContext.User.GetExpirationDateTime();

		return Ok();
	}
}