{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "187239923",
    "entityType": "User",
    "nonce": "0xaf641c56eeeff243e15a50a494ed8aeff8e92ebcc3a67f42fd631238f2f2b369",
    "signature": "0x6ee7a65332fabf194bcef94d620e097e862f12c5750c7ff5d4bf2c649722589037583a7ccf9d23d696919a51e635c281b4b86eba0a73213ed5e1237b234461911c",
    "signer": "0x21a7A27cB4B4662C0210B787b56aED1436642E2E",
    "userId": "645523947"
  }
}