{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "78883",
    "entityType": "User",
    "nonce": "0x5a7c2e19211adb7e02f3327137bfa42db6139b0a7d4a0b0762e43ceb8a4ecd09",
    "signature": "0x8f66f0e6cf6ac314b0073d7074f02e674468af81fba44ec0a2a83c59114092bf14db21d56fcce94262305774e9e0302c05a3fd0ec9d1133510aee6c0093497061b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}