Get wallet's NFT portfolio

This endpoint returns the NFT portfolio overview of a web3 wallet.

If the address was not added before it is possible that this endpoint will return 202 status. It means that portfolio for the wallet is not prepared yet, but will be available soon. In that case the client have to request this endpoint periodically, while 200 status wasn't returned.

NOTE: Don't forget to stop retries after some reasonable period of time. If the 200 status is not returned within 2 minutes it most probably means that some unexpected error occurred and the client should stop the polling.