{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307995",
    "entityType": "User",
    "nonce": "0xe49734001419bfde90e55dc588526e81c2570db9ec78d6e97ee09acf6a032bd5",
    "signature": "0x6ecfe5d821d0e66cb36443c4f2be045f789ee44276b47dfbcb9480f796f7308e7d9c5b563b0efd921d7f1a97b07260decc09b28d430dbd0f0b79b11585db9e591b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}