omit id, pubkey and sig in jsonifying event and they're not present.

event_easyjson.go

@@ -1,5 +1,3 @@
-// Code generated by easyjson for marshaling/unmarshaling. DO NOT EDIT.
-
 package nostr
 
 import (
@@ -110,19 +108,23 @@ func easyjsonF642ad3eEncodeGithubComNbdWtfGoNostr(out *jwriter.Writer, in Event)
 	first := true
 	_ = first
 	{
-		const prefix string = ",\"id\":"
+		const prefix string = "\"created_at\":"
-		out.RawString(prefix[1:])
+		out.RawString(prefix)
-		out.String(in.ID)
+		out.Int64(int64(in.CreatedAt))
 	}
 	{
+		if in.ID != "" {
+			const prefix string = ",\"id\":"
+			out.RawString(prefix)
+			out.String(in.ID)
+		}
+	}
+	{
+		if in.PubKey != "" {
 			const prefix string = ",\"pubkey\":"
 			out.RawString(prefix)
 			out.String(in.PubKey)
 		}
-	{
-		const prefix string = ",\"created_at\":"
-		out.RawString(prefix)
-		out.Int64(int64(in.CreatedAt))
 	}
 	{
 		const prefix string = ",\"kind\":"
@@ -162,10 +164,12 @@ func easyjsonF642ad3eEncodeGithubComNbdWtfGoNostr(out *jwriter.Writer, in Event)
 		out.String(in.Content)
 	}
 	{
+		if in.Sig != "" {
 			const prefix string = ",\"sig\":"
 			out.RawString(prefix)
 			out.String(in.Sig)
 		}
+	}
 	{
 		for key, value := range in.extra {
 			out.RawString(",\"" + key + "\":")

filter_easyjson.go

@@ -1,5 +1,3 @@
-// Code generated by easyjson for marshaling/unmarshaling. DO NOT EDIT.
-
 package nostr
 
 import (