post https://rest-api.hellomoon.io/v0/nft/collection/ownership/for-pubkey
NOTE: This endpoint is only callable by API keys in the following tiers:
- Business
- Developer
- Enterprise
- PremiumSharedRpc
- StarterSharedRpc
- UltimateSharedRpc
Number of NFTs in a collection owned by a given account pubkey. Useful for gating NFT collection features for holders.