{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215104",
    "entityType": "User",
    "nonce": "0xbbd41ed14f00c39b32d6bd295a730b8c0ff4fbdf8abf5ef305a3b7fd557c86f2",
    "signature": "0x0e2928724f8d8fbca7334d398b39c2c4075d4a807b289dac06060d614436b37469e5bbd806768bd3165a0bd15de124aa959ec75089dde6dd0c917ca55a03fae51b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}