diff --git a/src/NATSBridge.jl b/src/NATSBridge.jl
index ae65770..26ea775 100644
--- a/src/NATSBridge.jl
+++ b/src/NATSBridge.jl
@@ -783,7 +783,7 @@ A HTTP file server is required along with its download function.
 5. For link transport: fetches data from URL with exponential backoff, then deserializes
 
 # Arguments:
-  - `msg::NATS.Msg` - NATS message to process
+   - `msg_json_str::String` - JSON string from NATS message payload (e.g., `String(nats_msg.payload)`)
 
 # Keyword Arguments:
   - `fileserver_download_handler::Function = _fetch_with_backoff` - Function to handle downloading data from file server URLs
@@ -798,7 +798,8 @@ A HTTP file server is required along with its download function.
 ```jldoctest
 # Receive and process message
 msg = nats_message  # NATS message
-env = smartreceive(msg; fileserver_download_handler=_fetch_with_backoff, max_retries=5, base_delay=100, max_delay=5000)
+msg_json_str = String(msg.payload)
+env = smartreceive(msg_json_str; fileserver_download_handler=_fetch_with_backoff, max_retries=5, base_delay=100, max_delay=5000)
 # env["payloads"] = [("dataname1", data1, "type1"), ("dataname2", data2, "type2"), ...]
 ```
 """