{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "338569",
    "entityType": "User",
    "nonce": "0x39fdb47fa4168169176f8e4085a5cd96190729efc64a62277132e5bd6dab75f7",
    "signature": "0x2c71a2cc83c0ec369fcfbf9bbef141e716b674a6405c5936eef026becdb04fea245d350e4a6975059276a4aa91264e1bbb67f3b92ea2b2d8065cfe324046b21f1b",
    "signer": "0x4f4C18220D065b5195F09E23993B70Faa751F0C0",
    "userId": "583021207"
  }
}