{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x351eb442415370cfc4573a09e84d3e1a33cc545108cbe09d7d08a41f63564991",
    "signature": "0x081f0df9a6ba59e1b870d7be0d7a68e41e8c561b5a56a088ffe5749fabd40385480d9a1e705b2675a988a2162e12c23b1e6cb6b29ab9493698bc4a1a4b0d7c671c",
    "signer": "0x4ab505DBD73CB27C1457E037607E5fB3B27915f9",
    "userId": "186630"
  }
}