{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875153781",
    "entityType": "User",
    "nonce": "0x7848331e1a1b90135d495a46f8d2de13cd6afefa2134332f8a7c7452ce88a131",
    "signature": "0xd10c10896e3dad24f7c7a06017ae46c7193850bef9fcfd0a3e9224c3b8a17b3f7da7f65845fc24e52dcf8a086aa692e90fee10f65b32df64ddf796ad97517b9f1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}