{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "704994",
    "entityType": "User",
    "nonce": "0x90379f0654ec6c5a8f8f2280b09c3f6f77fbe32a8e293be08ef95bcec86d0b64",
    "signature": "0x1fd783420de6724f9faf62933ff81f614e0adc3931f31f23f0d56ae016c940e528ab04522ac0a7ed55b2ce681f18cd1ab2cf5e01d98ef1d07e3ac570314f2d331c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}