curl --location --request POST '/user/auth/oauth2/token?grant_type=client_credentials&api_key=&api_secret&refresh_token' \
--header 'Content-Type: multipart/form-data'{
"retcode": "200",
"retdata": {
"access_token": "Cji8NYO32ugrFJJkG7uCYiX2",
"token_type": "bearer",
"expires_in": 21600,
"refresh_token": "C6k8Vqytb4S8x41RUdMNqzG1",
"rt_expires_in": 43200
}
}