send chain id as a string for signing messages

Author: andygruening

Packages/Sequence-Unity/Sequence/SequenceSDK/EcosystemWallet/Authentication/Requests/SignMessage.cs

@@ -1,12 +1,9 @@
-using Sequence.EcosystemWallet.Primitives.Common;
-
 namespace Sequence.EcosystemWallet
 {
-    
     public struct SignMessageArgs
     {
         public Address address;
-        public BigInt chainId;
+        public string chainId;
         public string message;
     }
 

Packages/Sequence-Unity/Sequence/SequenceSDK/EcosystemWallet/Wallet/SequenceWallet.cs

@@ -75,7 +75,7 @@ public async Task<SignMessageResponse> SignMessage(Chain chain, string message)
             var args = new SignMessageArgs
             { 
                 address = Address, 
-                chainId = new BigInt((int)chain), 
+                chainId = ((int)chain).ToString(), 
                 message = message
             };