curl --location --request POST 'https://api.rapira.net/open/otc/order/send-message' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
"orderSn": "925151551525",
"message": "Hello merchant!"
}'{
"code": 200,
"message": "OK"
}