{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x60581100262ff60534251c2dc935c481210060a2875238203dbff05ee8982163",
    "signature": "0xd25aec2a2ea1843fee00fcff4ae858aa719b51f213936c2ac45771914625cb122205d80b09cce7abe049fa74369917b6237287b31aeca6e38a121261be7169111c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}