{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20471",
    "entityType": "User",
    "nonce": "0xef5236f7acdaddf7efaf7151d940089bd4364dba9cf485472cf8ff59eab9bbf8",
    "signature": "0xc506745a6717d0449ffba245228949e563d1faf05e208d55d15f195dabff2352669286f939e281183a1a347465964b301cafdf15725661f6eeb02396041cf9f51c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}