get https://api.pulsar.finance/v1/thirdparty/nfts/collections//nfts/
Usage Costs:
This route costs 1 credit.
Fetch an NFT Item by the collection id and the NFT token id.
collection_id (str): The id of the collection to fetch the NFT from.
token_id (str): The NFT's token ID.
The NFT Item.