diff --git a/python/jfjoch_grpc2http.py b/python/jfjoch_grpc2http.py
index af77db06..1f5ef7c0 100644
--- a/python/jfjoch_grpc2http.py
+++ b/python/jfjoch_grpc2http.py
@@ -5,7 +5,7 @@ from io import BytesIO
 
 import grpc
 import numpy
-from fastapi import FastAPI, Body, HTTPException, Response
+from fastapi import FastAPI, HTTPException, Response, Request
 from fastapi.responses import RedirectResponse
 from fastapi.staticfiles import StaticFiles
 from google.protobuf.json_format import Parse, ParseError, MessageToDict
@@ -72,8 +72,9 @@ async def deactivate():
 
 
 @app.post("/detector/start")
-async def start(data: str = Body(...)):
+async def start(request: Request):
     try:
+        data = await request.body()
         stub = jfjoch_pb2_grpc.gRPC_JFJochBrokerStub(channel)
         stub.Start(Parse(data, jfjoch_pb2.DatasetSettings()))
         return {}
@@ -127,8 +128,9 @@ async def get_settings():
 
 
 @app.put("/detector/settings")
-async def put_settings(data: str = Body(...)):
+async def put_settings(request: Request):
     try:
+        data = await request.body()
         stub = jfjoch_pb2_grpc.gRPC_JFJochBrokerStub(channel)
         stub.PutDetectorSettings(Parse(data, jfjoch_pb2.DetectorSettings()))
         return {}
@@ -163,8 +165,9 @@ async def get_settings():
 
 
 @app.put("/data_processing/settings")
-async def put_data_processing_settings(data: str = Body(...)):
+async def put_data_processing_settings(request: Request):
     try:
+        data = await request.body()
         stub = jfjoch_pb2_grpc.gRPC_JFJochBrokerStub(channel)
         stub.PutDataProcessingSettings(Parse(data, jfjoch_pb2.DataProcessingSettings()))
         return {}
@@ -175,8 +178,9 @@ async def put_data_processing_settings(data: str = Body(...)):
 
 
 @app.post("/data_processing/plots")
-async def get_settings(data: str = Body(...)):
+async def get_settings(request: Request):
     try:
+        data = await request.body()
         stub = jfjoch_pb2_grpc.gRPC_JFJochBrokerStub(channel)
         return MessageToDict(
             stub.GetPlots(Parse(data, jfjoch_pb2.PlotRequest())), including_default_value_fields=True
@@ -208,8 +212,9 @@ async def get_detector_list():
 
 
 @app.put("/detector/select")
-async def put_detector_selection(data: str = Body(...)):
+async def put_detector_selection(request: Request):
     try:
+        data = await request.body()
         stub = jfjoch_pb2_grpc.gRPC_JFJochBrokerStub(channel)
         stub.SelectDetector(Parse(data, jfjoch_pb2.DetectorSelection()))
         return {}