{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x90dc550906031f6a5858be23d613e49f1a1c7682cd1a6266a530512e984ce9e0",
    "signature": "0xc801eab0f0c82c56a12f6283181ca63811a49b39b3942be0fedeffb514532da22b8a0c9bf42255bf4edc05f0640e4b7f5559136710c2eac612fb34410d0a2b021b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}