{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54545",
    "entityType": "User",
    "nonce": "0x059cda4592960a3829725cb62b3c6f99ceaf2c0b5050a062c648d208508cb339",
    "signature": "0xc46b6b089b79a5cfc3259a815d9cddb987530d3fa358ab5cdb5bd7de23e5e6f36541c944fcaf1ebb5db89521fee57a176f7238b2934ba19393963f3a088578561c",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}