Review / Refactor NFT Code

[crypto-rizzo]

List of points to check / improve

Checkout / Checkout API

• [ ] Review Asset Ownership code in general
• [ ] Check to ensure we support ERC721 and ERC1155
• [ ] Add better logs / error messages
• [ ] Review Token ID mapping (store alongside transaction / attendee)

[crypto-rizzo]

also, Breaking changes moralis API incoming

https://docs.moralis.io/web3-data-api/breaking-changes/migration-guide https://docs.moralis.io/changelog/essential-api-changes

[crypto-rizzo]

closed by #787