{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "853591809",
    "entityType": "User",
    "nonce": "0xf1200c186d2abfbcf980f06bb2c9a4fc4591fad652c9f0bb77d649966a4727fa",
    "signature": "0x6d05aeda32879a5175be1a544d8fffdc3ed7a4b10c5a672fc0a76da8bc8cfd4400a2460f639526380112a007d5c70ccba0aa5bb8dfcb18232c1afc4e5ca2d22f1c",
    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
    "userId": "948584098"
  }
}