{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44142994",
    "entityType": "User",
    "nonce": "0xf4001391e936ef29bd12d242f2f2aaf5537edc555d12c9a81282c88846a87ca7",
    "signature": "0xe54143624c41162887f6c938c88665a8b3e93ef12a5435aaec6b7fdd5b7ced4c13ebb7fdc3f7d9aa1d8ec54f3eec8c7e666b7108d1277439babae633cccdac011b",
    "signer": "0x881DC02014d371dB5F53a35eB20019b0253C7d40",
    "userId": "637221900"
  }
}