{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "543297",
    "entityType": "User",
    "nonce": "0x8be440a3fe7ec43c43eb8daab556568f32b08809562bdb65ad1cfd85ae6c68b8",
    "signature": "0x6260bc9a5f0809199b9d405474d65170a93dff98ccace7374f1e074fdbc48b835b8d97302f934f5d22aec4681d17aca47f63ecd592ddb4345707dbf6cedbc87f1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}