{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333763354",
    "entityType": "User",
    "nonce": "0xb8a62d0f1de34093f008cdcdd9d930f682156a835e849edee6cb48082b6418ee",
    "signature": "0x7112d8e4a37ba532395e9937e071c3c77907f3bd9688f5d461f75ad453d1d9614ecac1c5cd802308340e5ba3f11dfd7c78aeeeb6eb776a57bb743bf32a1eec9c1c",
    "signer": "0xA56552Ddf7D4d833c1B3e4f8D727B787d4D1DFFe",
    "userId": "629530515"
  }
}