Used to fuzzy query all the content in the value of credentialSubject, case insensitive.
It can be applied to scenarios where did owner needs to be quickly located. The owner information is contained in the field of credentialSubject, and the fuzzy query can be used to locate the credential to realize the corresponding operation, such as revocation.
Example: For example, if the account of a natural person needs to be restricted or closed, we can use this feature.