{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "429900069",
    "entityType": "User",
    "nonce": "0x5a4a7e402fee138fd3e563ac5dfc8f53d85d23b78652a0e9be33075dd9f18150",
    "signature": "0xc2e8a722ffd8b36efa7a95f62f4758ed3e181abaa9c94313ced51c603a899d8814e681fd9959cc11d84ea93051699332478be2c6ca70588b1399ee7d071fdb1a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}