{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "303777695",
    "entityType": "User",
    "nonce": "0x9f237ed48e497914e94e0190254f614c5800cdb47163d9c0722d04c791958a25",
    "signature": "0x2441fabaef71b932b7f5d03a7d54197292eb946e5c4798f1c077861c98ffcc991731b92bdb326f2e494fa3f7f91a0fe93036ff132cfe656b2031d8c295512c8e1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}