{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1440255",
    "entityType": "User",
    "nonce": "0x3308837ee14c4a30e00a4875e75b19066ac13e2dfe8be34f353c44827169554f",
    "signature": "0x9f4dfde2795067d77e8eb8c2745399980d054442acbd69a2d9e5f14fd6b86de00f1af10c15c45158eaede45c27deebd5894d5562b7b2b72a9b96200a4303adc31b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}