{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x446534a1bc5268a7d7335ecc90009c3f504b52c31edfd9c4d01afcec451e2551",
    "signature": "0x7b0e877c0abdcec4d15a51fb90fccf9fe56b97e26d37c4261bd23c715ae7d1732128b74b022e2662016010f0325a129ff82e9e78c61c3cd36bbb310f49e8d4321b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}