tendermint/test/p2p/data/mach3/core/config/node_key.json

{
  "priv_key": {
    "type": "tendermint/PrivKeyEd25519",
    "value": "kT3orG0YkipT9rAZbvAjtGk/7Pu1ZeCE8LSUF2jz2uiSs1rdlUVi/gccRlvCRLKvrtSicOyEkmk0FHPOGS3mgg=="
  }
}