{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6200",
    "entityType": "User",
    "nonce": "0xc65973afe3e3d86d8be5ab674ab393bed50b48e33f81376be89f252f730311c7",
    "signature": "0x2962e16f862f2019919f10a04b758d5bf5c69802702980e66201659888792d352aabc1507af4dcb4a1dde0c3ab8cdf5b523797e9d5e73fcb36e73b3494156e731b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}