{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x724ee88a2c1c30fc4bf0a2d8f919b900ed0d4da32a300b22f706a8c564a7f6cc",
    "signature": "0xbbf98f3288f5ea08d53fa2d299259817f69e5940506da9dac0b355dc78d0a1ee675099b321584c90b70e25d29b468e0269ba74ab75fbec8a8a6273d3f48daba81c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}