curl --location --request POST 'https://dev.your-api-server.com/v1.0/access-token/b2b' \
--header 'X-TIMESTAMP: 2022-09-16T13:00:00+07:00' \
--header 'X-SIGNATURE;' \
--header 'X-CLIENT-KEY: OPGXXXXXXXXX' \
--header 'Content-Type: application/json' \
--data-raw '{
"grantType": "client_credentials"
}'
{
"responseCode": "2007300",
"responseMessage": "Successful",
"accessToken": "ZGMyNDA3NWQtNmM4Ny00NGNiLTQ2NTAtMDhkYWMxNTAzNzY0",
"tokenType": "Bearer",
"expiresIn": "900"
}