{
  "use": "sig",
  "kty": "EC",
  "kid": "pinniped-supervisor-key",
  "crv": "P-256",
  "alg": "ES256",
  "x": "0",
  "y": "FcMh06uXLaq9b2MOixlLVidUkycO1u7IHOkrTi7N0aw",
  "d": "1HY8B25gE7rgJoNPi8ugyefzLhRflVMV04DvBRAXSf8"
}