{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329513359",
    "entityType": "User",
    "nonce": "0xb3ff3b1bd73164a5a4a9d03b6e0f5b2a2843bf316572e490fb5b717a382b2201",
    "signature": "0x05830682d98ec0a6e85da4e4534517570f272319298470abb1b24c6878edc9cb1c6fdca470cf43136fe7c64a5eb2c65e5765dbba4df4f5a28e09dc3cb7b9a4ed1c",
    "signer": "0x9837C03EAdfA74365Cdf4e01e6840D356104bFab",
    "userId": "911622928"
  }
}