{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0x216f6e644b1d7f3dbc01f469dd73713d378fa15c225f1f1d020a3b0594b4d874",
    "signature": "0x2ef9aab7fce17d9aabda8010701a4e46ed029e7287562bf3f576a457eb6174706b4b74c99c1c6ef33865cce5ba5de12d438f4e5870bd9d6ab0a19a90e23daea81b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}