{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1897442",
    "entityType": "User",
    "nonce": "0x74606f0092dda657932e73209d268a6c337ee929b94f4cd04924e53b5f7586bf",
    "signature": "0x2944f4ac75362c7d8f1593fe0334a559d58505dc999fcedc9f6deeb21668177e317dea5eacae469f4edc75e86db71b0043b1f5763386975889d8f688aadddc591b",
    "signer": "0x4C0e8973cC8C5BB66d6627C8D489e336f0825A94",
    "userId": "939865626"
  }
}