{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103513693",
    "entityType": "User",
    "nonce": "0x99937f600765dd461d944c5337c24447bc3d846298315a1fc0d8ca816d40fef8",
    "signature": "0x96f29512313393b2f88074de9b101a589f3b2960890dcb2c1232b031286e9ee90c35f351b00657f977d36b721ee3c0abda2f70ae347c8075eb1d5f9d3ba7db051b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}