{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "506789556",
    "entityType": "User",
    "nonce": "0xf3e33a3770438fee359d706237b01912c4ac5a886c4523c2011280ff77727cc3",
    "signature": "0x35fa5e45f0a890c19bacb14245f36baeee77228690b91228a11763189dd8440677e88abcd53f8029cb8e3beac33351edf48d654822fdef0dc3924f14a5ac1aab1b",
    "signer": "0x10805E046e879D8e4503D67e495Fd1d280142e5D",
    "userId": "355715"
  }
}