{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf16ecc408e588e1747c5243323e2016803cabe57caf0126beddf69c5750b46e1",
    "signature": "0x0cd4aedba681de0106e2b5fa8e6c160171f700f2c64585991260c17e3e79259a59ec50aafa77129d2c1e991b0649b77eb5406295392d4a81b525a82acbc9e6f31b",
    "signer": "0xd756f61E9CBfC17332D0a1830a7F7Cae556b9863",
    "userId": "656890914"
  }
}