openid to operate merchant APIs.curl --location '/connect/merchant/get_access_token?app_id=undefined&app_secret=undefined' \
--header 'Authorization: {{bearerToken}}'{
"data": {
"access_token": "ff1846c74b8d014939f5da4f9575bfce69ffc0..",
"expires_in": 7200
},
"error": 0,
"message": "success"
}