{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7bc2bf695da3a64908c2292eab022d2b5adaa4cce4013ca1a108800b87aabbc4",
    "signature": "0xfbc719b43d91bc62deb3f67d19ad659ecf2eb2068d4298c941d9910171e8087a57d456ed845efb25c610f6e6397cbe2279d3ebabfa8263cc3e42453bedf683b31b",
    "signer": "0xCf495DD2A93D70eb0ccb3Cb24C9B455C7Bd7e708",
    "userId": "12404722"
  }
}