{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100976759",
    "entityType": "User",
    "nonce": "0x53db38e4749605bcc3a831f4894228e74eead6506d984733ba834f45dd879a67",
    "signature": "0x664b2eb44a5bb7a2834cb9eb9eb7528a10b10f78a8b136113872c767fac05e7e6d6f3bbbd0ed98106b76ac2d2f90920974f7412893fdc88c5c1eff6382db32fe1b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}