{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0xa660865ee58a0aef71662e30521252d6dc71784872a58571df98616606757546",
    "signature": "0x09e10026320ec50a9e72846d4441d42b8362faf38dd0d3d0a0f908e927b6617b4248aa69450c124f2c9a7db847828afdb06b014b651e55c089a88e8b6ca4568d1b",
    "signer": "0x1d2617D04b8b5F8c71C6C6E431Ac44800f13f59C",
    "userId": "574121956"
  }
}