tendermint/docs/examples/node3/node_key.json

{
   "priv_key" : {
      "data" : "95136FCC97E4446B3141EDF9841078107ECE755E99925D79CCBF91085492680B3CA1034D9917DF1DED4E4AB2D9BC225919F6CB2176F210D2368697CC339DF4E7",
      "type" : "ed25519"
   }
}