{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x294314fb47e114c90a1ded81a7c1dd57a1308970aef73489b564b49bcee5990f",
    "signature": "0xf1f9cf1518502d8fd0e7836ebf1e10983e731f6353d1c0bfb0968da3219fd9333a12edd31bb967a050c9cc06ff6dbe571fb157f6cb3173a3f9a47e4f484fb3521b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}