Data required to create a label.
The label value.
The subject of the label. If labeling an account, this should be a string beginning with did:.
did:
Optionally, a CID specifying the version of uri to label.
uri
Whether this label is negating a previous instance of this label applied to the same subject.
The DID of the actor who created this label, if different from the labeler.
The creation date of the label. Must be in ISO 8601 format.
The expiration date of the label, if any. Must be in ISO 8601 format.