Hi Krishna,
I have this format configured, see if this suites you.
{ "type": "LDAP", "properties": { "isPasswordEncrypted": "true", "userFullnameAttribute": "cn", "ldapURLForUsers": "ldap://123.abc.com/dc=123,dc=abc,dc=com", "userPassword": "PASSWORD", "caseSensitive": "false", "userSearchAttribute": "cn", "userEmailAttribute": "mail", "user": "CN=USERID,OU=Infrastructure Accounts,OU=Infrastructure Objects,DC=123,DC=abc,DC=com", "usernameAttribute": "sAMAccountName" } }
You will have to replace all the bold letters matching your organization.