Here is the code used to make the RPC call. Below that is the json that is generated for the final payload. This code has run successfully with exact same json. While this blob is big, it succeeds >90% of time with far larger payloads. So while size might be a factor it isn’t obvious how that plays into it. Also, our Nakama server never seems to receive this request so I dont think it ever attempts to send from the HttpRequestAdapter (must be nullref before then).

{

“leaderboard_id”: “DailyDungeon-5-22-2020”,

“owner”: “65349893-3d64-42d9-969c-686439d24dc1”,

“username”: “reaper”,

“score”: “34”,

“metadata”: “{“BattleResult”:{“TimeCompleted”:1590169741.0435808,“Username”:“reaper”,“UserNameIcon”:“60e9728a21925404c96a7e1a5ca6f3a9”,“AccountId”:“65349893-3d64-42d9-969c-686439d24dc1”,“BattleId”:“b8177961eee5ec2408cdd41a21e9c449”,“Result”:0,“TimeToCompletion”:986.32061767578125,“FirstTime”:false,“CloneTowerFloor”:0,“LeaderboardScore”:34,“WeaponQuestResult”:{“WeaponCharacter”:null},“CharacterResults”:[{“SquadId”:0,“IsLeader”:true,“Character”:{“UnitDataID”:“da609c9dc791cd4459a97adbe5fbd529”,“CurrentTier”:3,“ShardProgress”:37,“CurrentLevel”:40,“XPProgress”:0,“Equipment”:{“Body”:“7158f7092b566544795955eff86874aa”,“Head”:“b5fde8583534ff84583a7ca4742c6ae9”,“Legs”:“b017a902c34831b489735cca12f9ee99”,“Weapon”:“d3354ac9c42ad8f468bbd757d72a835d”},“AbilityUpgrades”:{“4149b86b4b8d9864891e82ace6e6171b”:1,“9f26a41b63813f84da96f7962eb3da83”:1},“ExpeditionId”:“7364e950-d3f4-4741-95d3-c32274461233”},“StatTracker”:null,“AbilityUsages”:{},“Alive”:false,“FinalHealth”:0,“FinalStats”:{“AggroRating”:100,“PhysicalDefense”:23,“HitPoints”:791,“ManaPerSecond”:0,“ManaPoints”:0,“MoveSpeed”:38,“PhysicalPower”:53,“BlockAmountRating”:0,“BlockChanceRating”:0,“CritChanceRating”:210,“CritDamageRating”:82,“HealPower”:36,“MagicalDefense”:32,“MagicalPower”:380,“PierceRating”:0,“ShieldPoints”:4329,“AccuracyRating”:100,“CastSpeed”:100,“SkillSpeed”:100,“CooldownSpeed”:104,“ActiveAbilityCooldownSpeed”:100,“HealRecieveRating”:100,“DamageRecievedRating”:100,“GlobalCoolDown”:100,“LeechRating”:0,“Scale”:100}},{“SquadId”:0,“IsLeader”:false,“Character”:{“UnitDataID”:“9932046126887f44d88f0df67ae89fce”,“CurrentTier”:4,“ShardProgress”:21,“CurrentLevel”:40,“XPProgress”:0,“Equipment”:{“Body”:“442112b2ba605e545931c72398123ac7”,“Head”:“1f610cd0ec14e5c43b7f7bda1abf4cb6”,“Legs”:“bea483f861a95024d967de936e8b5fe5”,“Weapon”:“f522da2e7add15246a5ab821362a6dcf”},“AbilityUpgrades”:{“7956cbbe91d5bcf4198f6f90a4165844”:1},“ExpeditionId”:null},“StatTracker”:null,“AbilityUsages”:{},“Alive”:false,“FinalHealth”:0,“FinalStats”:{“AggroRating”:100,“PhysicalDefense”:52,“HitPoints”:1053,“ManaPerSecond”:0,“ManaPoints”:0,“MoveSpeed”:38,“PhysicalPower”:452,“BlockAmountRating”:0,“BlockChanceRating”:0,“CritChanceRating”:180,“CritDamageRating”:82,“HealPower”:41,“MagicalDefense”:25,“MagicalPower”:42,“PierceRating”:0,“ShieldPoints”:4329,“AccuracyRating”:100,“CastSpeed”:100,“SkillSpeed”:100,“CooldownSpeed”:104,“ActiveAbilityCooldownSpeed”:100,“HealRecieveRating”:100,“DamageRecievedRating”:100,“GlobalCoolDown”:100,“LeechRating”:0,“Scale”:100}},{“SquadId”:0,“IsLeader”:false,“Character”:{“UnitDataID”:“03fcb0f46ee1cd54bac03eabd1707975”,“CurrentTier”:3,“ShardProgress”:12,“CurrentLevel”:40,“XPProgress”:0,“Equipment”:{“Body”:“922c2e25dc548fc48b914faf8807ecca”,“Head”:“7584c0f407e9cfb4ca1208f848792ac9”,“Legs”:“9f36bf8ea0027a9439be4175262efcb6”,“Weapon”:“f862102c17f6a584da8b82120783b9da”},“AbilityUpgrades”:{“5e16442ade6acbc4bbc182a81a21a06d”:1,“043c8f7834e063c4787a36941cc4254c”:1,“80073edfac0cfaa47a186e285191e5a5”:1,“93f23982b6999a44d8e83d8562696418”:1},“ExpeditionId”:null},“StatTracker”:null,“AbilityUsages”:{},“Alive”:false,“FinalHealth”:0,“FinalStats”:{“AggroRating”:50,“PhysicalDefense”:40,“HitPoints”:791,“ManaPerSecond”:0,“ManaPoints”:0,“MoveSpeed”:38,“PhysicalPower”:122,“BlockAmountRating”:0,“BlockChanceRating”:0,“CritChanceRating”:120,“CritDamageRating”:61,“HealPower”:269,“MagicalDefense”:23,“MagicalPower”:45,“PierceRating”:0,“ShieldPoints”:4329,“AccuracyRating”:100,“CastSpeed”:100,“SkillSpeed”:100,“CooldownSpeed”:104,“ActiveAbilityCooldownSpeed”:100,“HealRecieveRating”:100,“DamageRecievedRating”:100,“GlobalCoolDown”:100,“LeechRating”:0,“Scale”:100}},{“SquadId”:0,“IsLeader”:false,“Character”:{“UnitDataID”:“abce88bbc55a49d43877bcad3be84213”,“CurrentTier”:3,“ShardProgress”:7,“CurrentLevel”:40,“XPProgress”:0,“Equipment”:{“Body”:“c42d91faa334220449fceff4dc3793c0”,“Head”:“c2306a097abfc3d48b3197fe5e29b335”,“Legs”:“46b3830a92caae641b4e3953f508956e”,“Weapon”:“aff56401444ff584293ff30bf96e616f”},“AbilityUpgrades”:{},“ExpeditionId”:null},“StatTracker”:null,“AbilityUsages”:{},“Alive”:false,“FinalHealth”:0,“FinalStats”:{“AggroRating”:100,“PhysicalDefense”:56,“HitPoints”:911,“ManaPerSecond”:0,“ManaPoints”:0,“MoveSpeed”:38,“PhysicalPower”:519,“BlockAmountRating”:0,“BlockChanceRating”:0,“CritChanceRating”:90,“CritDamageRating”:61,“HealPower”:7,“MagicalDefense”:47,“MagicalPower”:8,“PierceRating”:0,“ShieldPoints”:4329,“AccuracyRating”:100,“CastSpeed”:100,“SkillSpeed”:100,“CooldownSpeed”:104,“ActiveAbilityCooldownSpeed”:100,“HealRecieveRating”:100,“DamageRecievedRating”:100,“GlobalCoolDown”:100,“LeechRating”:0,“Scale”:100}},{“SquadId”:0,“IsLeader”:false,“Character”:{“UnitDataID”:“25e9464fb2ba19b479e71c61df57d944”,“CurrentTier”:3,“ShardProgress”:77,“CurrentLevel”:40,“XPProgress”:0,“Equipment”:{“Body”:“8fbcff096c041dd4ba534c6b2fbdff73”,“Head”:“31385844efbba4e4798ed4b99f9cd9a8”,“Legs”:“630f98f87ec58b442acc6c137b9c8e1d”,“Weapon”:“89a379517201a2144a9d4ae409f79bed”},“AbilityUpgrades”:{“b0e07009b7d0f9340973393beb5f05da”:1,“ca4849a7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}