AEMaaCS bearer access in Postman

Hi All,

How can we generate a bearer access token from technical account details of below through postman.

{
"ok": true,
"integration": {
"imsEndpoint": "ims-na1.adobelogin.com",
"metascopes": "111_aem_cloud_api",
"technicalAccount": {
"clientId": "cm-111-11111-integration",
"clientSecret": "1111111"
},
"email": "1111111@techacct.adobe.com",
"id": "1111@techacct.adobe.com",
"org": "1111@AdobeOrg",
"privateKey": "-----BEGIN RSA PRIVATE KEY-----\r\1111111\r\n-----END RSA PRIVATE KEY-----\r\n",
"publicKey": "-----BEGIN CERTIFICATE-----sdfsdfsfd\r\n-----END CERTIFICATE-----\r\n",
"certificateExpirationDate": "2024-09-26T18:22:07.000Z"
},
"statusCode": 200
}
Need to invoke AssetAPI available in the AEMaaCS environment, have to validate the user credentials before proceed.

Thanks in Advance for your help.

__PRESENT