{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "577483105",
    "entityType": "User",
    "nonce": "0x87bd494c3b7e2376226bbe3e666b43e016536daf28bf23dd2031a1b37874e69a",
    "signature": "0x9179d454ccfbc9445827aeb97d4be554dd0fac8ce694e4055236fb7f68f8cddb698b9644739a71a9e83367ca17370265c5a7ec9400ffe3006c8e935ead218e801b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}