{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x719e86cd795cc5e0794f4ab61895bc48f7fa14a49a97e072722553fa140f7a43",
    "signature": "0xfb70a450988cd0a946cfab57bff0a01137e4dae92a8dccffbde0f33e503f2f765b7fe69884a24c7a7a5b2c33bc9f1ddd42bdbf557a82b7aae196645ddfc263781c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}