{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348395817",
    "entityType": "User",
    "nonce": "0x2912567d491dfd5544335f2174c01210a778d5a53d21afbf13e9ba95258269eb",
    "signature": "0x51aeefb2fc86f270576999411853bd7b55dbf22491e7c1b517fd3601525ba336693276ac7309f0430c9de0c977b12a5305b23d334a7140f36154871bd4ff66251b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}