{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "351149",
    "entityType": "User",
    "nonce": "0x60063a1d842158d81a42a0c576839fd473ae92bef79e6d4123b356bc975df575",
    "signature": "0xef1ea0d564b18305533d688f107d1085245cfa0a0137034109a420a74e0e7e7763dcde2648773b0c76c858e225c75f48671e8d91134a7223fe52a774722b7b261c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}