{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73883",
    "entityType": "User",
    "nonce": "0x5ce39924053dc33ab29df1afa58c567544c55b20c8265239ac38dc5a711ce288",
    "signature": "0xabc421f761bef9761d726c42f4b7af7837f55ce8a1a7c6eed2a0af0c2804e9416d2fca215ea1c0ca7a69c2708e0ef8ef8588aeb9e2ce8df7f84c5032d99345131c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}