NftAllowance

An approved allowance of NFT transfers for a spender.

Field	Type	Description
TokenId	TokenID	The token that the allowance pertains to
owner	AccountID	The account ID of the hbar owner (ie. the grantor of the allowance)
spender	AccountID	The account ID of the spender of the hbar allowance
serialNumbers	repeated int64	The list of serial numbers that the spender is permitted to transfer
approvedForAll	google.protobuf.BoolValuegoogle.protobuf.BoolValue	If true, the spender has access to all of the account owner's NFT instances (currently **** owned and any in the future). If this field is set to true the serialNumbers field should be empty.
delegating_spender	AccountID	The account ID of the spender who is granted approvedForAll allowance and granting approval on an NFT serial to another spender.