{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c24f438d88eaf2dbd35e36d93d71ef37aa92a402df82407800f2b60107b71bf",
    "signature": "0x0e2ffedd8e37fe4d78e9fbdb645d656fe490c4903255d9f2739a68fe0239c9d525a4a8523f7f803989febcaa08375ceb201cfa0b9da1ab10319f4cd29626e5241b",
    "signer": "0xa9D26D876fE6d96370795fD6Ec5271D6F919D0c3",
    "userId": "707133435"
  }
}