{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "573208",
    "entityType": "User",
    "nonce": "0xe812f631cff53bfd60f25156f6e93f3d8dde99cc8c3bba6a4c5e09a0eff415ba",
    "signature": "0x6fdb4c21a40f4bd045a974ad0ab8fc8224b64e60c83bab61b0994dd2c49fe50c2d7965ce353de2b85967480f51f6d0cb3245a55a69247f7925c434eb6ffbe3441b",
    "signer": "0x72bB0dBD4F0c2040428c41f3581607C6b41e8353",
    "userId": "959678379"
  }
}