I created a private key (pem) file using following command
openssl ecparam -name secp256k1 -genkey -noout -out ec-secp256k1-priv-key.pem
here is the file content.
-----BEGIN EC PRIVATE KEY-----
MHQCAQEEINpbPusf6E6YXk6E8Y0o56T35Pmyv4F6pIdjuxOsBeu/oAcGBSuBBAAK
oUQDQgAEHir/UGtp0N4xD5gKiMlgVS7infNl4fpq+CDPSRasA8jHSfACho5asgwv
0gZ4K9WMXPSGtI7Yflz5YXSYgAoUwQ==
-----END EC PRIVATE KEY-----
I tried to decode the above string sing this website. (https://redkestrel.co.uk/products/decoder/)
But getting an error: Sorry, we were unable to fully decode the data provided