{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x568b11f27c68fad7a8e7652135d938dcf0486e02a465fd7e2a73cdbe9134ecac",
    "signature": "0x58c1d806d4211bc57c5280825754a87ce4fa9ee757846a32c0b2421e077de0ac10c90f62938445bd0dfa966b06ce7248ab275000718a70a691fca918a09d534c1c",
    "signer": "0xfc1eE1614662bF4fC365C709fb21Fe69684AbD70",
    "userId": "937107046"
  }
}