{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x621bc835db45010e5d49759fdebd4ef14504eb3db04c5af04a463b324ce7286e",
    "signature": "0x5695f0dc06c963f77caea178dbdad4a72854c271be372fe688093fdd608c88544ed6e95a1719eb6fdd5d19fa115015f33c40ec5f4b65b5d0cf40b2d4168968091b",
    "signer": "0xFa4190a6C682aEF67fAf91B437CfC23C663a9C38",
    "userId": "97982287"
  }
}