{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xa7c3b225b6ad38ade9bfe7ff0f486c978dd1740cbf6936fe92b5dc57f8564adb",
    "signature": "0xcc630d19e7477a9a9c96f23cf396ab372a8bc64a48699d03a82c27c8f591ed6067fed3b78366fcc6970bf6e8c9dcccbdf54f1482bf2c8f95faa2a62526c0da8e1c",
    "signer": "0xF51BBf2D093bbC94555bc2299Ae53Ce8F7963374",
    "userId": "38277"
  }
}