{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x39beabcd102dcd2bc1ba14fd667880dcc5ac485378a805e5397d4167a9d679ec",
    "signature": "0x6b0313cda9ad45f557fbfb1e14b853d4e689e8915460cbf10d1dd20e74c26baf29b028e44e6562ed1ee5f245fc3f20cfd0fada78facb2ebbedaf4ec861600c6f1c",
    "signer": "0xe0fE7a9110fd6C13915A5293B4F7dBEcC1e08C77",
    "userId": "326288799"
  }
}