Const
keccak256(utf8("vana.data-point.tombstone.metadata.v1")) -- the metadataHash a deletion AddData carries.
keccak256(utf8("vana.data-point.tombstone.metadata.v1"))
metadataHash
keccak256(utf8("vana.data-point.tombstone.metadata.v1"))-- themetadataHasha deletion AddData carries.