{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x9d7df32ef640301e66b6f8587ddc5e9086d6bb642852a552f5589c90ef435d41",
    "signature": "0x973846eadefb9c99c8f3d8fe86892ad050a4ef2a50aa57625eb685564b103a0b7a1699e75720cd441242e0d23dde7b8a2c2e5c6f1f1e1a78d04cfec3a75d85521c",
    "signer": "0x5a81BccDd6D352c2ee8F60f6C731E4125465471f",
    "userId": "606900134"
  }
}