update base tx

packages/xrpl/src/models/transactions/common.ts

@@ -162,7 +162,7 @@ export interface BaseTransaction {
   /**
    * The network id of the transaction.
    */
-  NetworkID?: string
+  NetworkID?: number
 }
 
 /**
@@ -256,6 +256,9 @@ export function validateBaseTransaction(common: Record<string, unknown>): void {
   ) {
     throw new ValidationError('BaseTransaction: invalid TxnSignature')
   }
+  if (common.NetworkID !== undefined && typeof common.NetworkID !== 'number') {
+    throw new ValidationError('BaseTransaction: invalid NetworkID')
+  }
 }
 
 /**