Preserve JSON order

Cargo.lock

@@ -1558,6 +1558,7 @@ version = "1.0.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1c533a59c9d8a93a09c6ab31f0fd5e5f4dd1b8fc9434804029839884765d04ea"
 dependencies = [
+ "indexmap",
  "itoa",
  "ryu",
  "serde",

Cargo.toml

@@ -11,7 +11,7 @@ description = "A caching reverse-proxy application for the Hive blockchain."
 actix-web = "4.3.1"
 reqwest = { version = "0.11.14", features = ["blocking", "json"] }
 serde = { version = "1.0", features = ["derive"] }
-serde_json = "1.0.94"
+serde_json = { version = "1.0.94", features = ["preserve_order"] }
 lru_time_cache = "0.11.11"
 humantime = "2.1.0"
 config = "0.13.3"