How to verify RsaSha256 JWT signature with F#?

Question

I have a simple module that creates JWT tokens using RsaSha256 (RS256) asymmetric encryption.

let getSigningCredentials (rsa:RSA) (algo)=
    try
      let key                 = RsaSecurityKey(rsa)
      let signingCredentials  = SigningCredentials(key, algo)
      signingCredentials.CryptoProviderFactory <- CryptoProviderFactory(CacheSignatureProviders = false)
      Ok signingCredentials
    with ex ->
      Error ex

  let getSigningCredentialsSha256 (rsa:RSA) =
    getSigningCredentials rsa SecurityAlgorithms.RsaSha256

  let createJwtSecurityToken jwtSecurityTokenRecord =
    try
      Ok
        (JwtSecurityToken(
          issuer              = jwtSecurityTokenRecord.Issuer,
          signingCredentials  = jwtSecurityTokenRecord.SigningCredentials,
          claims              = jwtSecurityTokenRecord.Claims,
          notBefore           = Nullable jwtSecurityTokenRecord.NotBefore,
          expires             = Nullable jwtSecurityTokenRecord.Expires))
    with ex ->
      Error ex

This works well, I can create tokens. I can load them into jwt.io (i know, not production token) and verify with the public part of the keypair. I use OpenSSL to generate the keypair so I need to convert the private key to Pkcs8PrivateKey before importing it into the RSA object.

So everything works just fine. Now, I would like to verify the JWT token with the public key using F# (C# code is fine too).

Here is where it gets hairy.

I could not find any documentation on how to do so.

The only validation method I was able to find uses the signing key (private key) for the verification.

let validateJwtToken (rsa:RSA) (tokenString:string) =
    try
      let tokenValidationParameters =
            TokenValidationParameters (
              ValidateIssuerSigningKey = true,
              IssuerSigningKey = RsaSecurityKey rsa,
              ValidateIssuer = false,
              ValidateAudience = false,
              ClockSkew = TimeSpan.Zero
            )
      Ok (JwtSecurityTokenHandler().ValidateToken (tokenString, tokenValidationParameters, ref null))
    with ex ->
      Error ex

Is there a way / method to verify a JWT token with the public key?

I am using System.IdentityModel.Tokens.Jwt and Microsoft.IdentityModel.Tokens.