{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x2c90f2a62176b46f656064cace41d8436b706fd4ed0326501da97550204bd39f",
    "signature": "0x239d99ecc2809c414a93736fe3937225b3125a64ecb7a132565efe92a34455890def7db1675179feed60a04b39b0e0e76308f3c6bfef99482f4a4616f0b2bf781c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}