{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x708a7f7a611eb8796e94889f46eff13f71acf573448db1c7950e4437b6a0470a",
    "signature": "0xc185a3558cb1d9f9e38c4c1782ff090364188c60e6257ca89c5d2b7984a833136de77727130b40f6c3f465d1079fbcb8bb062aaee5c78e3fbfcc6ad89237cff11b",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}