{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4db33e3a9092f8f303d0bbd313a50cfeba748d0cbf136ea5c50563f1ecc17b52",
    "signature": "0x8c00feeaa576407b8c157558c7fd27c32cede44ffdd27fd426d87c4bb35b5c9c4c4ff315f2792a45810c46b139b3dd47dfaea877a4d43b281de61f5d3233ed911b",
    "signer": "0xcF691466561EDceb9d985b040E1811767E9F9720",
    "userId": "821139125"
  }
}