{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "386245473",
    "entityType": "User",
    "nonce": "0x6607bb7dccd4b2529055cd3570d03f8bf1f096807b507a693a8a5e734a57b681",
    "signature": "0xdfce48d17449dce6a6a71c5f62cc8587c1fae346cd9bbd6204fee421afe18afe53db21555762214f8408153133170124ade00bda72c5affa171d9f8645a00f711c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}