{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354640",
    "entityType": "User",
    "nonce": "0x9f226c673ff11c2dc396e8f225a43969224e4c811c3055aa471b332415bd0580",
    "signature": "0x57ef95205c02191deecefe706e7c59f533c19e1949d5726f5814a30f4249f8c82d03d4351fba14b547367a5ac236d2bb4f49b1ed8d1097a8f57b52b4597f23601c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}