{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8e4c758824560dd3ac34663d5f1bd883060d50da759eb0407bd7d982937df1d0",
    "signature": "0x45055855243eed66e6b9f302893acbedd3086aba998654051de7b35b3086928478ea3c146f105ce346922c5b3dac6af034f285742d18a0b920372b9aa36c2eab1c",
    "signer": "0xFe098d4d7D63a2B16Fd709FA662b88650C35a96e",
    "userId": "213328126"
  }
}