diff --git a/damus/Models/Purple/DamusPurple.swift b/damus/Models/Purple/DamusPurple.swift
index bfe76aee4..ce84996c0 100644
--- a/damus/Models/Purple/DamusPurple.swift
+++ b/damus/Models/Purple/DamusPurple.swift
@@ -62,17 +62,14 @@ class DamusPurple: StoreObserverDelegate {
     
     func create_account(pubkey: Pubkey) async throws {
         let url = environment.get_base_url().appendingPathComponent("accounts")
-        let payload: [String: String] = [
-            "pubkey": pubkey.hex()
-        ]
-        let encoded_payload = try JSONEncoder().encode(payload)
         
         Log.info("Creating account with Damus Purple server", for: .damus_purple)
         
         let (data, response) = try await make_nip98_authenticated_request(
             method: .post,
             url: url,
-            payload: encoded_payload,
+            payload: nil,
+            payload_type: nil,
             auth_keypair: self.keypair
         )
         
@@ -81,7 +78,7 @@ class DamusPurple: StoreObserverDelegate {
                 case 200:
                     Log.info("Created an account with Damus Purple server", for: .damus_purple)
                 default:
-                    Log.error("Error in creating account with Damus Purple. HTTP status code: %d", for: .damus_purple, httpResponse.statusCode)
+                    Log.error("Error in creating account with Damus Purple. HTTP status code: %d; Response: %s", for: .damus_purple, httpResponse.statusCode, String(data: data, encoding: .utf8) ?? "Unknown")
             }
         }
         
@@ -110,6 +107,7 @@ class DamusPurple: StoreObserverDelegate {
                     method: .post,
                     url: url,
                     payload: receiptData,
+                    payload_type: .binary,
                     auth_keypair: self.keypair
                 )
                 
@@ -118,7 +116,7 @@ class DamusPurple: StoreObserverDelegate {
                         case 200:
                             Log.info("Sent in-app purchase receipt to Damus Purple server successfully", for: .damus_purple)
                         default:
-                            Log.error("Error in sending in-app purchase receipt to Damus Purple. HTTP status code: %d", for: .damus_purple, httpResponse.statusCode)
+                            Log.error("Error in sending in-app purchase receipt to Damus Purple. HTTP status code: %d; Response: %s", for: .damus_purple, httpResponse.statusCode, String(data: data, encoding: .utf8) ?? "Unknown")
                     }
                 }
                 
diff --git a/damus/Nostr/NIP98AuthenticatedRequest.swift b/damus/Nostr/NIP98AuthenticatedRequest.swift
index 2d613813c..84d2dd680 100644
--- a/damus/Nostr/NIP98AuthenticatedRequest.swift
+++ b/damus/Nostr/NIP98AuthenticatedRequest.swift
@@ -14,28 +14,41 @@ enum HTTPMethod: String {
     case delete = "DELETE"
 }
 
-func make_nip98_authenticated_request(method: HTTPMethod, url: URL, payload: Data, auth_keypair: Keypair) async throws -> (data: Data, response: URLResponse) {
+enum HTTPPayloadType: String {
+    case json = "application/json"
+    case binary = "application/octet-stream"
+}
+
+func make_nip98_authenticated_request(method: HTTPMethod, url: URL, payload: Data?, payload_type: HTTPPayloadType?, auth_keypair: Keypair) async throws -> (data: Data, response: URLResponse) {
     var request = URLRequest(url: url)
     request.httpMethod = method.rawValue
     request.httpBody = payload
     
-    let payload_hash = sha256(payload)
-    let payload_hash_hex = payload_hash.map({ String(format: "%02hhx", $0) }).joined()
+    var tag_pairs = [
+        ["u", url.absoluteString],
+        ["method", method.rawValue],
+    ]
     
+    if let payload {
+        let payload_hash = sha256(payload)
+        let payload_hash_hex = hex_encode(payload_hash)
+        tag_pairs.append(["payload", payload_hash_hex])
+    }
+        
     let auth_note = NdbNote(
         content: "",
         keypair: auth_keypair,
         kind: 27235,
-        tags: [
-            ["u", url.absoluteString],
-            ["method", method.rawValue],
-            ["payload", payload_hash_hex]
-        ],
+        tags: tag_pairs,
         createdAt: UInt32(Date().timeIntervalSince1970)
     )
+
     let auth_note_json_data: Data = try JSONEncoder().encode(auth_note)
     let auth_note_base64: String = base64_encode(auth_note_json_data.bytes)
     
     request.setValue("Nostr " + auth_note_base64, forHTTPHeaderField: "Authorization")
+    if let payload_type {
+        request.setValue(payload_type.rawValue, forHTTPHeaderField: "Content-Type")
+    }
     return try await URLSession.shared.data(for: request)
 }
diff --git a/damus/Util/Constants.swift b/damus/Util/Constants.swift
index 1eb5f376e..1fe7d8b39 100644
--- a/damus/Util/Constants.swift
+++ b/damus/Util/Constants.swift
@@ -9,7 +9,7 @@ import Foundation
 
 class Constants {
     static let PURPLE_API_PRODUCTION_BASE_URL: URL = URL(string: "https://purple.damus.io")!
-    static let PURPLE_API_TEST_BASE_URL: URL = URL(string: "http://localhost:8989")!
+    static let PURPLE_API_TEST_BASE_URL: URL = URL(string: "http://127.0.0.1:8989")!
     static let DEVICE_TOKEN_RECEIVER_PRODUCTION_URL: URL = URL(string: "https://notify.damus.io:8000/user-info")!
     static let DEVICE_TOKEN_RECEIVER_TEST_URL: URL = URL(string: "http://localhost:8000/user-info")!
     static let EXAMPLE_DEMOS: DamusState = .empty