{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "407339",
    "entityType": "User",
    "nonce": "0x5d8c4330a687bfe2be47de605908070a16ffaf830f10e57d8c6b9cdfa8141be8",
    "signature": "0x62cbd5148f1e48f5dcc358ad4aa3baa793d5d0234bf8b1bbb7ea204b5fcc2c3a38bdbf497d3ab19869fc91555f2f68d3a31e1f34fc5937be013293b2cd1372d81c",
    "signer": "0xc6ED8841CAa23191AB374bd7d546F29746aA36B9",
    "userId": "441723301"
  }
}