{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64073",
    "entityType": "User",
    "nonce": "0x4690c21d5b5780ceda012e860840aef2ee2b19b2578594af6b2bdfe51db8c21f",
    "signature": "0x9f347ced0b2828fffd08b8d2c1d737a3abe37b9816ffa8dec3fa1c8f2529e0e05a3e49dd224b7f8e3a50cdd3533fe41c3e3faf094d5bc6f35535a0cf0cb2f4861c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}