[Python] Why do i keep getting bad request when trying to send GraphApi batch request

My goal is to send a batch request of with the conversation id so I could get all the conversations that the user have in their inbox , I tried to read the docs many times but I find their docs difficult to understand, they have different type of batch request, I tried to use the sample batch request but I'm a little bit confused, I think the problem is with the way im jsonifying the requests.

batch_request.append({
"method": "GET",
"relative_url": f"{conversation_id}?fields=messages{{id,created_time}}"
})

batch_json = json.dumps(batch_request)


has anyone succeeded sending a batch request and can help me make this work?

Im simply trying to get many conversation by conversation_id but i keep getting bad request...

@staticmethod
def get_inbox_messages(ig_user_id: str, access_token: str):
try:
# Get list of conversations
url = (
f"https://graph.instagram.com/v17.0/me/conversations?platform=instagram"
f"&access_token={access_token}"
)

logger.info(f"Fetching inbox messages from: {url.replace(access_token, 'TOKEN_HIDDEN')}")
response = requests.get(url)
response.raise_for_status()
conversations_data = response.json()

if 'error' in conversations_data:
raise ValueError(f"Instagram API error: {conversations_data['error'].get('message', 'Unknown error')}")

# Extract conversation IDs
conversation_ids = [conversation.get('id') for conversation in conversations_data.get('data', [])]

# Prepare batch request to fetch conversation details including messages for all conversations
batch_request = []
for conversation_id in conversation_ids:
# For each conversation, get the messages
batch_request.append({
"method": "GET",
"relative_url": f"{conversation_id}?fields=messages{{id,created_time}}"
})

# Convert the batch request list to JSON
batch_json = json.dumps(batch_request)

# Prepare the batch request
batch_url = "https://graph.facebook.com" # Note: this is the correct endpoint for batch requests

params = {
'batch': batch_json,
'include_headers': 'false',
'access_token': access_token
}

# Make the batch request
batch_response = requests.post(batch_url, params=params)
print("Batch response:")
print(batch_response.text)
batch_response.raise_for_status()

# Process batch response
batch_data = batch_response.json()

# Continue processing the batch data...
return batch_data

except Exception as e:
logger.error(f"Error getting inbox messages: {str(e)}")
raise

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