{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x981bfe7163553065822e7d48688dda2121bc8fd481a003dd4a53f30ae17b5e97",
    "signature": "0x51efac8c2276bf7c101fa99dd1907b59bd552e92c35a06271d6151f295260b8115693c3948aa99740cea2d446ef4b873e4b933fe8cb50b8b52a8c43b6d8ace881b",
    "signer": "0xcc9cCc523005B394381478381D34DddB8558A28f",
    "userId": "957873025"
  }
}