{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308196323",
    "entityType": "User",
    "nonce": "0x5f48a0ca957cb1a719b140edc9091efd4c342a20b04a9a594fa5ea9e12d3c52f",
    "signature": "0x7f06bda82e833523651d8173df94c517c43e18041879fe4a7738ca802ac5c8c05700adf6f333329a8c7a692dbbde42608f613065a32e873bda81128f79da1e671c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}