{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x7e1d4ecb897aa74643a9f4025e0a3861a76443902d9c408e98f46f3ee40f7f54",
    "signature": "0x38a3b8e0573f2c9ae032ef50f0914c245a322180ecca499cf489e5e9cb230ae45cd849765f3e4391b0f3d3896fa82f7799e792eae41382bfd1a81235bf4549181c",
    "signer": "0x4d84865eC9840b029213f7661b90599431ed21C3",
    "userId": "477260546"
  }
}