{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x590f0c4d041e8485ffc7824844c25a1a31699b063395903fa0fade9f19da9f4c",
    "signature": "0x76abd265a37b5e21fffe1c0c80fd7590fd79d491cfc3f404f299352acd1a56672dfea1b88e9eb5a526b465b20e2bf3b14c4509e7f162cb5b9fd2ffa2b0c2cdbc1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}