{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "405303979",
    "entityType": "User",
    "nonce": "0x00ea0979630d53860d062051950fd6d990cd5c93414c6d7d78879e637f9689dd",
    "signature": "0x2aa4599431b26c7937a8b22576e67ec8ad324166c53e8052dd5c84f72a83456542da545a32fb802a59d27d590c1dd2f147b27b9574da080a41787428705d78fe1b",
    "signer": "0x45bF43B2249eaD8735452629EBF9699021a99196",
    "userId": "624817137"
  }
}