Connect NFT-flow-account-{account id}

Number of APIs: 3

1. Delete NFT Account DELETE {{aisp_base_url}}/v1/nft/flow/account/:account_id

2. NFT Account Balance GET {{aisp_base_url}}/v1/nft/flow/account/:account_id/balance

3. NFT Account Transactions GET {{aisp_base_url}}/v1/nft/flow/account/:account_id/transactions?since=2015-06-03&until=1965-02-07