{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x6b4042d3916d70fdc50321dad8dc7a6b376fa7e2523a1cee215288d214351d3f",
    "signature": "0x015b640b154dbc02ced3f6bd64943e4821e2fd00b96ba8f549bf0026a762f6d5285cf2e8090ff900cbebb95a0b656ca1ed90ed2513ff8a16f2e2f6e0a96908e21b",
    "signer": "0x0fdbE0966d6f65E3DE225D16D06131c10d4F2b3e",
    "userId": "560630042"
  }
}