{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "59528",
    "entityType": "User",
    "nonce": "0xb990680ce53cb19e43f912cfb31d56430b03dc4f0c390f1cd921111a3f37ab20",
    "signature": "0xb4388fab10d2497925209684e0c4ad82c24ebc8b0dad231c7e18b493ad67a9c12bdb91c2591e282f2390026bdb2ecfcd674dd61acb62f0da02c94d1c8d70fefa1c",
    "signer": "0x7f590bEFD43b7cCcF038372CE50C813B4290A5f4",
    "userId": "297301449"
  }
}