diff --git a/chains/v20/preConfigured/chains_dev.json b/chains/v20/preConfigured/chains_dev.json
new file mode 100644
index 000000000..6882d89af
--- /dev/null
+++ b/chains/v20/preConfigured/chains_dev.json
@@ -0,0 +1,11 @@
+[
+    {
+        "chainId": "a483f28729c8665930d7391d48bd371c5be944a6d45c68bec1f01d725610d071",
+        "icon": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/icons/chains/gradient/Polkadot.svg",
+        "name": "Magnet"
+    },
+    {
+        "chainId": "01f15f9d48ea279640cb35267bfd33a88bb4c21ebb00b129e9bc2d2236aaafdb",
+        "name": "SoonSocial"
+    }
+]
diff --git a/chains/v20/preConfigured/details/a483f28729c8665930d7391d48bd371c5be944a6d45c68bec1f01d725610d071.json b/chains/v20/preConfigured/details/a483f28729c8665930d7391d48bd371c5be944a6d45c68bec1f01d725610d071.json
index 7ead7776f..8c1e8fcc6 100644
--- a/chains/v20/preConfigured/details/a483f28729c8665930d7391d48bd371c5be944a6d45c68bec1f01d725610d071.json
+++ b/chains/v20/preConfigured/details/a483f28729c8665930d7391d48bd371c5be944a6d45c68bec1f01d725610d071.json
@@ -1,6 +1,7 @@
 {
     "chainId": "a483f28729c8665930d7391d48bd371c5be944a6d45c68bec1f01d725610d071",
     "name": "Magnet",
+    "icon": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/icons/chains/gradient/Polkadot.svg",
     "assets": [
         {
             "assetId": 0,
diff --git a/chains/v20/preConfigured/detailsDev/01f15f9d48ea279640cb35267bfd33a88bb4c21ebb00b129e9bc2d2236aaafdb.json b/chains/v20/preConfigured/detailsDev/01f15f9d48ea279640cb35267bfd33a88bb4c21ebb00b129e9bc2d2236aaafdb.json
new file mode 100644
index 000000000..3b170181c
--- /dev/null
+++ b/chains/v20/preConfigured/detailsDev/01f15f9d48ea279640cb35267bfd33a88bb4c21ebb00b129e9bc2d2236aaafdb.json
@@ -0,0 +1,20 @@
+{
+    "chainId": "01f15f9d48ea279640cb35267bfd33a88bb4c21ebb00b129e9bc2d2236aaafdb",
+    "name": "Muse",
+    "assets": [
+        {
+            "assetId": 0,
+            "symbol": "SOON",
+            "precision": 10,
+            "icon": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/icons/chains/white/Polkadot.svg"
+        }
+    ],
+    "nodes": [
+        {
+            "url": "wss://rco-para.subsocial.network",
+            "name": "Public node"
+        }
+    ],
+    "addressPrefix": 28,
+    "options": []
+}
diff --git a/chains/v20/preConfigured/detailsDev/a483f28729c8665930d7391d48bd371c5be944a6d45c68bec1f01d725610d071.json b/chains/v20/preConfigured/detailsDev/a483f28729c8665930d7391d48bd371c5be944a6d45c68bec1f01d725610d071.json
new file mode 100644
index 000000000..8c1e8fcc6
--- /dev/null
+++ b/chains/v20/preConfigured/detailsDev/a483f28729c8665930d7391d48bd371c5be944a6d45c68bec1f01d725610d071.json
@@ -0,0 +1,22 @@
+{
+    "chainId": "a483f28729c8665930d7391d48bd371c5be944a6d45c68bec1f01d725610d071",
+    "name": "Magnet",
+    "icon": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/icons/chains/gradient/Polkadot.svg",
+    "assets": [
+        {
+            "assetId": 0,
+            "symbol": "DOT",
+            "precision": 10,
+            "priceId": "polkadot",
+            "icon": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/icons/chains/white/Polkadot.svg"
+        }
+    ],
+    "nodes": [
+        {
+            "url": "wss://magnet-rpc.magport.io/ws",
+            "name": "Public node"
+        }
+    ],
+    "addressPrefix": 42,
+    "options": []
+}