{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "270209897",
    "entityType": "User",
    "nonce": "0xaad8fb2be1e4d9e4e6d12cccd4a1ccb77aa476f397e7900459c0e43cfc5c97e2",
    "signature": "0x2e640edc5fdef7dbb9556db23acfe687ab4e6cc88e4b327a358867b2ba7ab85f64db456ae5b1bfc2c9126d7c35552812048ed86217bcaa77a8010f3ee62b7dda1c",
    "signer": "0xa1F606584fdE30bB7d4BE2EbeC98A5F95E4559f4",
    "userId": "786922215"
  }
}