{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1212434",
    "entityType": "User",
    "nonce": "0x13f8ff641810bf88ad33fa6583b901676b8639e7484b077c3eacd867f1af587f",
    "signature": "0x80f9a1f5f93f43c583cafb4c7f4c815d8c43d00b75df116cdcd1cf28c9ce32370426248c43263e984c1afb05d3a8e91e7b53311e5c3d75b8c0120c368f039bce1c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}