Use JSON for label metadata in NIP-32

32.md

@@ -21,7 +21,7 @@ Label Target
 ----
 
 The label event MUST include one or more tags representing the object or objects being
-labeled: `e`, `p`, `r`, or `t` tags. This allows for labeling of events, people, relays,
+labeled: `e`, `p`, `a`, `r`, or `t` tags. This allows for labeling of events, people, relays,
 or topics respectively. As with NIP-01, a relay hint SHOULD be included when using `e` and
 `p` tags.
 
@@ -47,9 +47,8 @@ with a kind other than 1985, labels refer to the event itself.
 Label Annotations
 -----
 
-A label tag MAY include a 4th positional element detailing extra information about the label in question. This string
-should be a url-encoded list of key/value pairs, for example `quality=1&confidence=1`. Any key MAY be used, but the
-following are recommended:
+A label tag MAY include a 4th positional element detailing extra metadata about the label in question. This string
+should be a json-encoded object. Any key MAY be used, but the following are recommended:
 
 - `quality` may have a value of 0 to 1. This allows for an absolute, granular scale that can be represented in any way (5 stars, color scale, etc).
 - `confidence` may have a value of 0 to 1. This indicates the certainty which the author has about their rating.
@@ -130,7 +129,7 @@ that's the case.
   "kind": 1985,
   "tags": [
     ["L", "#t"],
-    ["l", "bitcoin", "#t", "quality=0.7&confidence=0.2"],
+    ["l", "bitcoin", "#t", "{\"quality\": 0.7, \"confidence\": 0.2}"],
     ["r", <relay_url>]
   ],
   "content": "I think this relay is mostly just bitcoiners.",
@@ -145,7 +144,7 @@ A plain review of a relay.
   "kind": 1985,
   "tags": [
     ["L", "review"],
-    ["l", "relay", "review", "quality=0.1"],
+    ["l", "relay", "review", "{\"quality\": 0.1}"],
     ["r", <relay_url>]
   ],
   "content": "This relay is full of mean people.",