{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299731",
    "entityType": "User",
    "nonce": "0x6d98c0fcc98419716a420ee5e3ef62a284eb19c58d657f5f6da49a968faf94b6",
    "signature": "0x92f2232ef5876478756fc72a33e031b327f75fe03458b8d6e09041d5497f0cdb704b43d176f4cd4a19e492b0893f08b0faa8e314cd22cb6a232beb300c62be0c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}