{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a44ffead670b1a57a7e97870545edcba874d9287a7238e6c98f3240bb10ea1e",
    "signature": "0xe6f8630a9e51cd78228f18e8c3a32e51211476015a6178c64bfe0bf508087609592a29ecf1d3062b7d9f82b6a5f988901c3f409ae958e0f428715d645993d1451c",
    "signer": "0x8410Fff41A21506513ADB15d7f9ccD924f5575bf",
    "userId": "51627436"
  }
}