JSON Web Key (JWK) for IRS E-services account

I need a JSON Web Key for my client to access the IRS E-services system.

The following fields are required in the JWK: kid, kty, use, n, e, x5t, x5c. The "kty" field should be equal to "RSA".

I want to do self-signed. I get an error exception with everything I have tried.

IRS E-Services API Client Add Information

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