{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "849312402",
    "entityType": "User",
    "nonce": "0x3aa1e782f323a2cd2a15bb1b5dddcf66bdcef5ee96d78aca001431943f78d16d",
    "signature": "0x10faf4e2907ef9497977c91347a12b475f47c695d5c4d496f63919da549b999e4116e597aa765924870d61bdcd66c4f4fc4394d4c4542f917dfd6c156b95c6181c",
    "signer": "0x8B50B0687712445cB22f8e1232Be42e560bE3deb",
    "userId": "487640022"
  }
}