{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "819693025",
    "entityType": "User",
    "nonce": "0x65a10e2ec320781a9619604cc98889363b96f1591381b6eb0cb785664bff526d",
    "signature": "0xc476b30fc1875ec33e57eed75274b26d79f8877e9155ee7c6cc86154a177a6ee450eaea133e9004f1ce3d8978d537f96612b3f4aaf3b000496f4e2819625bcfe1c",
    "signer": "0x75387BeED3d3B040a54C3e303fF0B07Da67a9186",
    "userId": "223536026"
  }
}