XiJson Plugin : Serializing and deserializing Json string in blueprint.
Link
Features:
Support for JSON formatting
Support Struct,DataTable,TMap<FString,FString>,TArray<FString> serialization to Json
Support Json deserialization to Struct,DataTable,TMap<FString,FString>,TArray<FString>
Key API List:
JsonFormat
Json to Struct,Struct to Json
Json to DataTable,DataTable to Json
Json to Map,Map to Json
Json to Array,Array to Json