{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x38f1ed9b1c0e12eef407dc68a9972b3ba9eb3e469f9a4164f9f76ed5dcff51e0",
    "signature": "0xa1eddc03131963dca806ffaec43c835aff61c689afacf6cf6ea31bcb8f34a1915d569b7f5b97d34dc2bcacaf0d474b3d8a18374555b84f491c5a348e083cd24d1c",
    "signer": "0x6C3dfBb34F175eC157f17632F02a690cFC044641",
    "userId": "30425633"
  }
}