{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "464332",
    "entityType": "User",
    "nonce": "0x916021d46c0a97f70eb5439afc94310e8c0100fd480fa835a27413b915e56e8e",
    "signature": "0x5f264b39f742ee10de77dbc99ecb400b81815dd0d8588ddf8eb31fe074ac9b162742f28c020c3c6cdd8354b32fc98718b029877794391dc5171f3ce2b80e224b1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}