{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa4d638030ac08b8bb889f512131c37fc4d82bc8e104f21c1ae0b053ea23794df",
    "signature": "0xc7008940c2f183dd9049f8ad80af1f7b716b0c7621640d76555fc675b2df7bab7ce65ce2f7c19fe17b406b8927ba9f463eff25d301bf5f1c2f047bb61c2f6e901c",
    "signer": "0xC5d19ADEDbEaB0441693Bcb806DD45B726b452a1",
    "userId": "270304224"
  }
}