{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x030a92d66c049c5a99a540a271508d28ec9bdea5d5d2fd9519716aaf0c0499e3",
    "signature": "0xad78897e3d34ad132ebce026ec6e2832c2bb31d95a4fa13750dd16ddc5b351c9001314910e9b31ec2cab90c7c74b5800f43aeb209002f4c3da693459b34f418e1c",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}