{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x9c3ea44db8d1aee32aa780f48e92ac92cebeb7e9a4e888011418258553c11a13",
    "signature": "0xd5158c84915f68175c812623d0e3f0f158cc2498dceb82d8aa7e51ae57d6d2eb75ad16e7b5ac2bf9ce0a6cc20c15ab16b6b66cb3768d17ed7799db7e058ff56d1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}