{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18168",
    "entityType": "User",
    "nonce": "0xb4783032cd6b842246c2ce27e242c554cbf985f82612a7c1c42079d886483f6a",
    "signature": "0xcd54e280c488080e21ec3ce94bda04373a1ce3418d9a2addce4c6fc093eb8ac952b8df826deea1d9f50b644fb2ab5539ea0766f8becf4e07af6cea94a150b19e1b",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}