{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353918",
    "entityType": "User",
    "nonce": "0x16e375cc35d1f7d7bf6c52bf1696ef659cb37f05532ee5d92bcfdd41996d1ab6",
    "signature": "0xb0aa1fe99e0465bd00ab5be0b86bb8676175bb442dbb80767c34593547fc00e67f71aec0f037432456bcd5d407bc368c844b445ceefbdc11a07f0e4313172c171b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}