{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571117272",
    "entityType": "User",
    "nonce": "0xbd4e111c2d970ef60087276c27b459fa490e1e4dead1a2d7fd432fff37985521",
    "signature": "0x8a3b148f5023cb08c64cdf3758a1e2a9357bbbc3dfd73fe93a205dfb1bb213357a35d999df7f1c830991a3c7b24a998c75712cada160079dfb8356e2489f0c131b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}