{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb300bee23b50f7d5392cb5b1edf44bf6de9a24a10aed4e9902828e59b076b06e",
    "signature": "0x8ac0cc69b7ee678c6a4a0fced0463ebc357f8a9997d5145f235d2b7a3edb550c61ebc4026f7cde77882a22568135193fa9a6df3a07228ba2a1dfc1a4ea9549b91b",
    "signer": "0x3f2bE9B463aF957B402B3F55366C97F142ce7352",
    "userId": "663004641"
  }
}