{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "189460",
    "entityType": "User",
    "nonce": "0x1873e9839b6576bdd0fe42f1adaa116fc551d57e0952447a923e51a02086dc4b",
    "signature": "0xfc45c28a8e5025eee96d1bd39892bd82320fab7f2b34790c2ebeb397b15556ef433928dedc56304e31f5d4331d799276879d69c81b6698facabd6617b941b9201c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}