{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "873624",
    "entityType": "User",
    "nonce": "0x4c96a573d45fe018a78618f9d8df95914ef00cc3d8facff8a43c8c84374de298",
    "signature": "0xaf690d8a403dede1af09eb9cc34352b112e913022ccb1b2c3deb7cbed1693ad5587e25b73214f84f057d3b7e25b86a3eb7f92d8405c1ee01ca4d903fa6dfc4521b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}