{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "614212580",
    "entityType": "User",
    "nonce": "0x0bbd0d4b0da08842bf6e3626fdf4c2847fb5130e58adcc1e3dc82497f3f741ab",
    "signature": "0xa34fb945a946efee2bf5696656def7a6139a2b7a1bf7e5a660657ccfa432474c521b94194f501f933ba27725793946015dc3f470fb40cc79e669d01b3fde99581c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}