Trouble adding NodeAuthorization to genesis config

[cbonaco1]

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Hello,
I am going through the Build a Blockchain -> Authorize specific nodes tutorial and am having some issues with two steps.

Implement the Config Trait

Step 4 - Adding the NodeAuthorization to the construct_runtime! macro. This macro does not seem to be used anymore, instead I added it to the mod runtime as follows:

mod runtime {
 //...existing code
 //...
  #[runtime::pallet_index(9)]
  pub type NodeAuthorization = pallet_node_authorization;
}

The cargo check command works after adding it this way, so it seems to be fine; however, making this more clear in the tutorial steps would be very helpful, especially for folks (like myself) who are new to Rust and Substrate 🙏 🙏

The bigger issue I am experiencing is under Add genesis storage for authorized nodes step 6 & 7 where we need to add NodeAuthorization to the testnet_genesis function in node/src/chain_spec.rs. The body of the function in the current codebase is different than what's in the tutorial. instead of adding to the GenesisConfig struct, it's returning a JSON object by using serde_json::json!. tried adding a JSON object with key nodeAuthorization with a few different schemas, but cannot get the node to run. for example:

		"nodeAuthorization": [
			{
				"opaquePeerId": bs58::decode("12D3KooWBmAwcd4PJNJvfV89HwE48nwkRmAgo8Vy3uQEyNNHBox2").into_vec().unwrap(),
				"accountId": endowed_accounts[0].clone(),
			},
			{
				"opaquePeerId": bs58::decode("12D3KooWQYV9dGMFoRzNStwpXztXaBUjtPqi6aU76ZgUriHhKust").into_vec().unwrap(),
				"accountId": endowed_accounts[1].clone(),
			}
		],

however I am getting an error when starting the node - Invalid JSON blob: invalid type: map, expected a sequence at line 1 column 1189

any guidance on what the expected JSON structure is here would be greatly appreciated!

Steps to reproduce the problem

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