{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x63d003958cbe70683cc920badd51e1475b90c733aa07bea4952cf44b46816d3b",
    "signature": "0x3c7e3e5f75809892a1104e0eaca56a6cab0156aa7cd9eefd35ee3a64444c5f8526bee97a51229c713b1482f4c21f5f2e2f71d51762352be3eafaa1c6246789351c",
    "signer": "0x2617Bb662623b191189985d981437C0c0E3830f4",
    "userId": "553530691"
  }
}