{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150263",
    "entityType": "User",
    "nonce": "0xfd8f52fe56fe94910de70c900e59cdc64fc69dee1eccb48707ffa10ff445dc77",
    "signature": "0xaadaa8b37aac88f434c0c26b8485bdfd7a50ea71a0ae5f522f9c8ccd9d8c7c3e2fa20d5e76d703b572ee7d2fb252ec047cfd3acfdc350e889db680b3b4b013291b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}