curl -L \
--request POST \
--url 'https://api.aimlapi.com/threads/{threadId}/messages' \
--header 'Authorization: Bearer <YOUR_AIMLAPI_KEY>' \
--header 'Content-Type: application/json' \
--data '{
"role": "assistant",
"content": "text",
"metadata": {
"ANY_ADDITIONAL_PROPERTY": null
}
}'