server: Add AddressDetails model

server/app/com/xsn/explorer/models/AddressDetails.scala

@@ -0,0 +1,17 @@
+package com.xsn.explorer.models
+
+import play.api.libs.json._
+
+case class AddressDetails(balance: AddressBalance, transactionCount: Int)
+
+object AddressDetails {
+
+  implicit val writes: Writes[AddressDetails] = Writes { obj =>
+    val values = Map(
+      "balance" -> JsNumber(BigDecimal(obj.balance.balance)),
+      "received" -> JsNumber(BigDecimal(obj.balance.received)),
+      "transactionCount" -> JsNumber(obj.transactionCount))
+
+    JsObject.apply(values)
+  }
+}