{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc67e6ba56422388cadf8e8736a3e631a329fabb51af3c65eadb14bac7a758d7b",
    "signature": "0x2c40c0f9cd2609561bf24e713d628126b188d761e35b7acd9d91301e95a4ae0848d5454f0a4acab05e3092f6f33e12bfc1536c8230dedeca513402931a67d1c51b",
    "signer": "0xDFA6637C4e5300e247ABc16F4F736c90176f31B7",
    "userId": "812694829"
  }
}