{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320311",
    "entityType": "User",
    "nonce": "0x007e0d6c6a27ee74cf83b42eb9178003bb77e48dee33c5ae2d8281fc92e239cc",
    "signature": "0x1e130b7ad22eedcb58c311191ad84ed36c6926704a3535acbcefd0dffca46b093b521efa682da6410cbb2b46cdb1bfe5fc155f9e3ffb3bbaa5f4d433a701d7c01b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}