{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354403",
    "entityType": "User",
    "nonce": "0x4f23788f42ab01af9820ae61e06bbdf8c26a74ea12246359095dada54e54a962",
    "signature": "0xfc028dbfff4da4cc3a9db51ded0a57e4798fef82cb8f8ffd4e087a19f260143a23a4f74a5b4ce3aef564148af6a08d6e8aa0669c8d195a6c6713df884c539c1d1b",
    "signer": "0xF2c19977A72e7f63bBbD9063748E52c002b22f6b",
    "userId": "957488166"
  }
}