{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0xa9e06f297ddf20e1d024b9551511857a2089797a4438fdbb12312ead93113689",
    "signature": "0x522832d017bf3e1a9b826024d4794dbda66a0269e0cc7cefb0576878f9618d036600fc792bc34769e558d40e2d571f97b495266c9506dd509f4e6300516ad13e1b",
    "signer": "0x31d8287F4A5705D078E4d3f85F3c5cfe5cA8E18D",
    "userId": "100638"
  }
}