{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x188b328ce8758c576b5f6643ab230aba651f702c8bdf904ba2587003f2a31fe1",
    "signature": "0x2d970540be9032b141ffc5f54f41c351f7cd1b60b94c8086070dc22e5be743cf0f8b49ac906cb53a00a8a3769d1326696c8059192e30b03ed9c7afe3c21e007c1b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}