Sample JWS Verification Application

Input	JWS	eyJhbGciOiJSUzI1NiJ9.eyJpc3MiOiJqb2UiLA0KICJleHAiOjEzMDA4MTkzODAsDQogImh0dHA6Ly9leGFtcGxlLmNvbS9pc19yb290Ijp0cnVlfQ.cC4hiUPoj9Eetdgtv3hF80EGrhuB__dzERat0XF9g2VtQgr9PJbu3XOiZj5RZmh7AAuHIm4Bh-0Qc_lF5YKt_O8W2Fp5jujGbds9uJdbF9CUAr7t1dnZcAcQjbKBYNX4BAynRFdiuB--f_nZLgrnbyTyWzO75vRK5h6xBArLIARNPvkSjtQBMHlb1L07Qe7K0GarZRmB_eSN9383LcOLn6_dO--xi12jzDwusC-eOkHWEsqtFZESc6BfI7noOPqvhJ1phCnvWh6IeYI2w9QOYEUipUTI8np6LbgGY9Fs98rqVt5AXLIhWkWywlVmtVrBp0igcN_IoypGlUPQGe77Rw
	Verifying Public Key	Public Key Modulus (N)	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
		Public Exponent (E)	010001

Encoded Head
Encoded Payload
Encoded Signature Value
Signature Input
Signature Value (Hex)
Head
Payload

Fill JWS signature, modulus and public exponent of a public key if you need.
Then just press "Verify JWS Signature" button.
If the signature is valid, you will see a dialog 'JWS signature is '*Valid*'. You may see an error dialog if it is malformed signature.
As for JWS signature generation, please see this sample.