{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1b8fe8864ce4bff4f8702fd71adf3e37b053330cac89a3c51299f0cf18115650",
    "signature": "0x774061532d7f21f26b8bae94dd8232dba9b845947ab7d87272b7452835e4d07946bb629e6f8d5051a6b70479d8aa247d6c701370a350bcb8cc4c6bbe3ed7173d1c",
    "signer": "0xdc774bc3dDe14Deb5FFf307E6B1BA0fC77D1243E",
    "userId": "274667836"
  }
}