docs: more

docs/userguides/config.md

@@ -189,6 +189,27 @@ request_header:
   Content-Type: application/json
 ```
 
+You can also typically specify request headers at the ecosystem, network, and provider levels:
+
+```yaml
+# NOTE: All the headers are the same only for demo purposes.
+# You can use headers you want for any of these config locations.
+ethereum:
+  # Apply to all requests made to ethereum networks.
+  request_headers:
+    Content-Type: application/json
+
+  mainnet:
+    # Apply to all requests made to ethereum:mainnet (using any provider)
+    request_headers:
+      Content-Type: application/json
+
+node:
+  # Apply to any request using the `node` provider.
+  request_headers:
+    Content-Type: application/json
+```
+
 ## Testing
 
 Configure your test accounts:

docs/userguides/networks.md

@@ -355,13 +355,16 @@ request_header:
   Top-Level: "UseThisOnEveryRequest"
 
 ethereum:
-  request_header: "UseThisOnEveryEthereumRequest"
+  request_header:
+    Ecosystem-Level: "UseThisOnEveryEthereumRequest"
   
   mainnet:
-    request_header: "UseThisOnAllRequestsToEthereumMainnet"
+    request_header:
+      Network-Level: "UseThisOnAllRequestsToEthereumMainnet"
 
 node:
-  request_header: "UseThisOnAllRequestsUsingNodeProvider"
+  request_header:
+    Provider-Level: "UseThisOnAllRequestsUsingNodeProvider"
 ```
 
 ## Local Network