{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "486490947",
    "entityType": "User",
    "nonce": "0xb668ff5f3f62470aec4b813101b2cb3bf4f66db030870d7bc08f7e4a222e8904",
    "signature": "0x5bc755729ad5b030258100ca7c7613a600119b953e5386290d79da42a54a149218ca8d77d395813711b488537a1528e18d0f93220584f4730bd871e3cfe3513b1b",
    "signer": "0x375963f281CEdF4D9D180496F80A256D574daBa2",
    "userId": "981824750"
  }
}