{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "679513519",
    "entityType": "User",
    "nonce": "0x9ae560e553ba5ee9628e3187f709efc79de8d556adb9975ffcb750d8079db759",
    "signature": "0x90c0c9e35db6bd5ca10a6d9cb232d1f81f89dfd488827f212c6e480fdc8569ca37a5a9a63e60f774eea953fd91b628852707117ac444f2227a24b767137ee3461b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}