{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "48341",
    "entityType": "User",
    "nonce": "0xf8681a25ccdcdb1f82177796187cf4c1db41c4def01eeb8a156a9e3b3b018564",
    "signature": "0x17d93b628c8eb4a9d838a43e947e66fa962df339f44f03d303ab5a74dc2585fb2b6c6f3dcbf861513cb1f100fe607ebf13dbb9eb502eb7206cbc3acf2d289ad31b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}