{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x668f630b3d94fa9ae5c6102eeea227c06466d30ddea11bb951c3e54050f3a800",
    "signature": "0x1a4bfd1e3a488cde750d2da622f2ca8b9eb0a1a6681e77e5946e6feba654d32e6755afe3abb65e38b1b1013e8c9395293175bb52518b72f61074902cc16f63701b",
    "signer": "0xCD23b5ae760853367a8773a7E36005e3E44cbcbC",
    "userId": "208462349"
  }
}