{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6542",
    "entityType": "User",
    "nonce": "0x802a4a3e338899f4a2d3b9e5282a748349b621e86e0e37ebc43e116e7f2646af",
    "signature": "0x357cc0bf68fd36cd35ff2568d4954ef7c1ea8baaf0f24064bb7681d981c8fa554b9fe0c0237f1a1df576180b1bb9bde367c326ca07765fadad7562d454b391511c",
    "signer": "0x4Ff77Da6D5C7286ea15F7F94FdCC04a641dE9a27",
    "userId": "512734349"
  }
}