public async Task <ActionResult> GetGamertagFromPlayerId([FromBody] GamertagsLookupRequestModel model) { var players = await _store.GetPlayerDetailsByUserIdsAsync(model.UserIds); var result = new { gamertags = players ?.Select(p => new { userId = p.UserId, gamertag = p.Gamertag }) ?.ToArray() }; return(Ok(result)); }