curl --location '/api/conversations//messages' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"role": "user",
"text": "string",
"timestamp": "2019-08-24T14:15:22.123Z"
}'{
"id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
"role": "user",
"text": "string",
"timestamp": "2019-08-24T14:15:22.123Z"
}