{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd62eecbac93ddcb7ac4ef2f36fa9cffbac8545203a1f3d715c6c13ea6812df59",
    "signature": "0xdffc7137cad876008d0e49a00af13fdbfafa1520d726cb86fb082601a09f2669026e2d14b769c8a2e32d1690eda5c91255f3ee4f03d32413b70fac6cad72845e1b",
    "signer": "0x4c4e4BD78139bf2468BE325BEBef2683F240Afe5",
    "userId": "707163815"
  }
}