{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304051",
    "entityType": "User",
    "nonce": "0x7f98557021e867c8518a1fe0f9f5db692036369b1ffbe552082a5ac820107f41",
    "signature": "0x74e8eb85dc7b297591867f0c664c8918920259686bb434370091e218831092ad5742d113961382943a35ad94e57f7c7ab37194ee9feac0303161830cdaa810e11c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}