{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305071",
    "entityType": "User",
    "nonce": "0x64a5a2a71f89b8d5e8ed7634a261315bcaaafc2bfaba1421a0b0404f4687ea64",
    "signature": "0xf5b4425ae367c0d42a544434bd97e6a97d29c1e4aa908356b61190f6bbb804e342bde81e93aeddaddaafa317ce5a9c1041bb7effebaab05e39d185b97365e0901b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}