{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "451983017",
    "entityType": "User",
    "nonce": "0xe8b6c60c68cb50a5eaa47f70addffb3c8b72121b6ab3cb9552eafd6ea3c483a2",
    "signature": "0x4ae35f3d56725e91f0bfb769a709b0d6f7733f82f849af01a86d533364e554d220e09c75ebc84b8c58fde75a4bae606ab46cd2a514e19563e65cab872ecea94b1b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}