{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb09841899f19e8cf5ab325450f6d8b483c37190bd066b995ca322ae4536742ee",
    "signature": "0x5868ba607a246431ab6c449bc4b63ab256e16e714e4dc269cf341c565374a463779ed322f1fb5b5cc995363f6974d6dadf9722b14bef23d18645c46abd300a001c",
    "signer": "0xF4F4BffA09cd1B82D70aEe4E3aFab364555A9F67",
    "userId": "43007244"
  }
}