{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "963788362",
    "entityType": "User",
    "nonce": "0x423a215902bb62a3803035a8efc1d0a2402fe5b262876a124ff22120b61ba477",
    "signature": "0xf9b521ad2a680038c5a1c3c42ef662a485ac027af1eeba60121be4d0e5b108c1641f4d3195775caa201093d1c852b1f302385ce0e05289dfc08635dba22135531b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}