After some research I decided to to upload my player's level progress which is huge dictionary in a text file as an entity file.
Following the link below,
https://docs.microsoft.com/en-us/gaming/playfab/features/data/entities/quickstart
I get the following error in PlayFabHttp.SimplePutCall() :
error CS1503: Argument 3: cannot convert from 'method group' to 'Action<byte[]>'
the method group it's talking about is void FinalizeUpload()
And how am i supposed to input my text file name here ? payloadstr?