{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306102391",
    "entityType": "User",
    "nonce": "0xd99aea3c09b59a639fe742385ee61c8693412ffeaab5ff73ad8a51019ebd6f41",
    "signature": "0x1966dd5a2c8112717cbec41c65ae7e6919450d07a352a17349aa11962d12bf593a1b64da5ee306e61da58471d3eef89954ee622881e4675cf509ab47da6ad75e1b",
    "signer": "0xdA4a90FB60d0D99ED3Eaeb8b2c26bBC1F5A3b981",
    "userId": "481107997"
  }
}