in fastpay_core/src/messages.rs [133:141]
fn eq(&self, other: &Self) -> bool {
self.value == other.value
&& self.signatures.len() == other.signatures.len()
&& self
.signatures
.iter()
.map(|(name, _)| name)
.eq(other.signatures.iter().map(|(name, _)| name))
}