{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3e75397a1465ec1593da50a8dda814f59859a890d00b5086fbad716a8bd68844",
    "signature": "0x630aaa7ec81b79faba905ebac80e0aced78ea6edf57ae165989d30642df42d847a92241605b9152287d9d63e1523a8fea613964b797cbeea0b085243a2054b4c1b",
    "signer": "0x0fc01DC8883Ea1720b1ee49d3893003785B6C8F2",
    "userId": "879267217"
  }
}