nomos-node/nodes/mixnode/config.yaml

mixnode:
  listen_address: 127.0.0.1:7777
  client_listen_address: 127.0.0.1:7778
  private_key: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
  connection_pool_size: 255
log:
  backend: "Stdout"
  format: "Json"
  level: "debug"