Function token_unshield_extra_sighash_data_v0 

pub fn token_unshield_extra_sighash_data_v0(
    token_id: &[u8; 32],
    owner_id: &[u8; 32],
    recipient_id: &[u8; 32],
    amount: u64,
) -> Vec<u8> 

v0 byte layout of token_unshield_extra_sighash_data. Frozen: never mutate; a layout change requires a new _v1 + version bump.