Added a field to the user JWT that disables nonce verification when set.

go.mod

@@ -1,3 +1,5 @@
 module github.com/nats-io/jwt
 
 require github.com/nats-io/nkeys v0.1.3
+
+go 1.13

user_claims.go

@@ -40,6 +40,8 @@ type UserClaims struct {
 	// IssuerAccount stores the public key for the account the issuer represents.
 	// When set, the claim was issued by a signing key.
 	IssuerAccount string `json:"issuer_account,omitempty"`
+	// When BearerToken is true server will ignore any nonce-signing verification
+	BearerToken  bool `json:"bearer_token,omitempty"`
 }
 
 // NewUserClaims creates a user JWT with the specific subject/public key
@@ -97,3 +99,8 @@ func (u *UserClaims) Payload() interface{} {
 func (u *UserClaims) String() string {
 	return u.ClaimsData.String(u)
 }
+
+// IsBearerToken returns true if nonce-signing requirements should be skipped
+func (u *UserClaims) IsBearerToken() bool {
+	return u.BearerToken
+}