{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306115",
    "entityType": "User",
    "nonce": "0x8b41107f1ab293b1e3adda3f3e22b56566cf943b60fa8ce5242e3f8dda145883",
    "signature": "0xd3b2bb26949abebf3971d5d4fa211f93ebf6aaa41aa71ca73e4ae3e5c7e3ae6c155b8706ca0d47c410f610b1b1acaeb1c0444cf906f49a969f13e83c6fc56f2f1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}