{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe8f44a5c28a595f5aed638e5e06ff31af5445ea7fe42b33c6065119cdfb93f7c",
    "signature": "0x0245946fabc419f7494eb4c4c9967c782e52bd2728ef59272f2020ad515889f4125ba41fa19bb3201cf3f871026411eeeba874cec1ee6b063c856c1b29c7a55a1c",
    "signer": "0x877fe927efF58e699cc6509EBF89b18c97151931",
    "userId": "408485784"
  }
}