{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc4d96275e63fa98e64749eb994246a1c55cfafa1c00395bec1d8f24414d8a28c",
    "signature": "0xd27be8b84941ee06f26fcc85876544efda464866ac4c4fddec8039cdb8297ccb402cde7e9db2102e1eb09123c44f39c323873ea33ab1a7302f913d835c0057521b",
    "signer": "0xc7Fa9D9de4Adb976dEa68BCaDE8D5825D337ef91",
    "userId": "620440719"
  }
}