{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "235412",
    "entityType": "User",
    "nonce": "0xf7c3a83337b4900391cdba068afffe28b2376573d0fb5bca6d0968b4fbcc491b",
    "signature": "0xe43cc97883eaf548b76b1d1ef3692dae45d62603c01e472d28933d35ddf926e93328e74c6097ebf91f546581064e5df9af3903f1f1bfbe97b963e3d14d653a571b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}