{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "235421",
    "entityType": "User",
    "nonce": "0x02944f6fab6f8afb290c7a13483a75da11d993800bf1ac08b98c78c955ee804f",
    "signature": "0x4a6066a037c959022305f5a9a759117e9e940286be2c122378471b65f2158d620300f8e235884ea9d3729af1eecc029ee75bcf9aab35eee856831a706053420a1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}