{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xf152c88b0b7a624dd60f43328a4704d60a78ffba61f1bacc74f75017bff76887",
    "signature": "0xc28392b8a31928782f0da7e0d6a647d2eff77452ea1217ba7f17667abfd83cc54d27e9eb5b6a0efa083a4b6d032660276db727b44c1459d11a7f09e3149ba7f31b",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}