{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "310483",
    "entityType": "User",
    "nonce": "0x1ecbea681c4bd47264c80dfa6e835d477174cd37b9343adac47943e05e763cb3",
    "signature": "0x900ce37b7db06018330fabc1ec8d708dcbb2c5097e36ef2bb7b2a240f6f4c85655ac5561d9a390c99939c392a0d84ccdc10ea175067a128c7702866696d1d7d91c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}