{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcd004eed4b8922b3c5ecbd53e764924d5185a477d9a1fa0c7569a7f03f7f821c",
    "signature": "0x5b1207866881d69ce6875b9d884d4aff4a7701d7351630e0550bc5a633d5706213667dd7a24293af460e18bd1b9965df2bd33d6417d79cb47066a5eaa0f3dadc1b",
    "signer": "0x018685A8F9C9a99819C0bd677F6B63d6C6d81334",
    "userId": "942338009"
  }
}