{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "219968466",
    "entityType": "User",
    "nonce": "0x12bc4687c531b74aa36e22f24571cf583d7dcf6bf275cee3ebfb352f7404cde6",
    "signature": "0x0ee70f66661e941cbd112c73fb412fdf1b577ecb425bbaf2e7dd67b48d45dbe5472fb6c168ed83058dffb7ad713b51a4882cecc98ace40c2a9dbe8a61ddfa1891b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}