from: 1549401238
to: 4294967295
channel: 24
decoded {
  portnum: TEXT_MESSAGE_APP
  reply_id: 2869271800
  bitfield: 1
}
id: 1976119855
rx_time: 1755213844
rx_snr: -10.0
hop_limit: 4
rx_rssi: -116
hop_start: 7

printf(“Hello back.");