{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x4e4965cf1883b4afe950293cbc47b07fff32726ff1d2379e2349084137bad650",
    "signature": "0xb3735121efad25c3e0e327454c3a720df0f08d530ed625af3bfe0d77f630fb8e3ea540fac376b56e6d036eab002f83c3de63c6fde841a963117b72438ada42901c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}