Cannot load a pre-trained model

I am a beginner on this. I want to use a pre-trained model that I found somewhere. I do not know the exact architecture of the model, I only know that it is based on resnet18. When I load the file, I get the following dictionary. Any help on how to make a PyTorch model out of this?

I think you need the model architecture in this case to load the weights. You can try other models from torch. hub() which can be loaded without the need of the architecture depending on your use case