{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311438",
    "entityType": "User",
    "nonce": "0x8af68b5b979ebd35f6e04c1b600467edeaa049742df4b308b4b3d83722d65db2",
    "signature": "0xb17298ed5675b29a457ae2f18818502afcf015887ec02a98fa3ac14c2a08b3dc6a48e879ed4b75e4a57e3ddc85e9971a7b4ea68720bbbce991e41212cf872ba11b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}