{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x95fe43ec825c39a61e97681a865b8de12875567c0615ef4324985ae4761daf77",
    "signature": "0x9a1c710b5bf94b3d8d234e1012ba3a4a8ed8b9b9e47c4f8640899197b1fd40023a74c396d92227ebcda7a60c4274296de91ecfd86508bcd9e777f76768a3f75d1b",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}