{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987199883",
    "entityType": "User",
    "nonce": "0x66fbf2c578594e51fc6dc714fa0d65edd9fa9eb7973dd9499f1a584dcb74cb4d",
    "signature": "0xbc67ae603734cf74f60880fa87cb27b01413ca82dcdc327a08007fdfae89efee3b4693d965bae02384df709a8fcd96e2d085c49f8e8583863ed592ee04664f701c",
    "signer": "0x1011297FAB27Cd869ba8313983bF4793AB784705",
    "userId": "540848139"
  }
}