{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfef6b49f0989609d1061e7a9bde229142a7c925d2e4c85166121ade372dd8dd6",
    "signature": "0xb63cec318a25d93a70756effcb9e20d08a523d1cc5563244a8290c839caf45c127d248338072a5686cd54bf17ba823f19999870930d188c721680fcca1fec7891b",
    "signer": "0x64b5D065BCE2ae4eB809629c32e7C75ec91cFAD6",
    "userId": "513910447"
  }
}