{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0x6ae47a524fd67c953b80464608e204b400068b363cbb4901a485c3c266b98015",
    "signature": "0xe3ee9205597b3e31ce388e6be13784d78dc7eb435f9c7a4ac9c4ab1acfe289ea135e02eda563873086ab13a04db53b25e4e1d0bda2ed9bfe77de4066a8fb43281c",
    "signer": "0xf76Be3e57D30ebb176cA7D31f49157c7f56E6b0D",
    "userId": "204302128"
  }
}