{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x452520940bd4911ee00929c7948436c6f9091db71fcdaf5f447b79586f6528cc",
    "signature": "0x3d4927a75bb294d9c7b71b914248c5aad6ba103bee5c92cb7af6c35880369c7a22c01a13dc2f7bc3deaecc00ff345c352bff0059abbed1e425b1ef31883c717c1b",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}