{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xb8fd8ee07995d8963ebc53df5c8a3e833832681e9e6c085d946d4bd16cd1d14e",
    "signature": "0x030fe480ac47c6e7046ce51ad290c08dc64fa90e0c0f3e06690a6e603d4f27421726a56dae861a4bf0de7378bcabb8e4ac5b4d14ca267e6e1d85cc406cca90c81c",
    "signer": "0x5a3D8ee650e3AC49E3814789a0e2783f0bAFe395",
    "userId": "951735298"
  }
}