{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x3d3b4ae9f25e427d5e82608095eddef5a2822dd5ce5a109f1fa814b919d35c74",
    "signature": "0xc9904d8d983d755cd265d9f1e2471471a617102ddb6dc6ec13c79d0204c5376f1143cac7536abd7c1068d103f1f69f94c9e318271241b4d5a80c54f9555ef1cc1b",
    "signer": "0x64F598C81c0625EA190d421bEe9C604A9EaD5ea6",
    "userId": "462839245"
  }
}