getOnGameNFTTokensOf

function getOnGameNFTTokensOf(
   address _nftContract, 
   string memory _ownerUid
) external view returns(uint256[] memory tokens)

data = await manageNftRouterContract.getOnGameNFTTokensOf(fairyNftContract.address, uid)

// result
[
  BigNumber { value: "1" },
  BigNumber { value: "2" },
  BigNumber { value: "3" }
]