{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "418692997",
    "entityType": "User",
    "nonce": "0x3db69abd463934aa08652b66949bbd3b69f5a8cdb18e9937de3370cf0c8711ff",
    "signature": "0x8770f3e6380677c85ee86644d1443a379a87a72f386829d75ab52b5d8574a524215af9404121724f254c5a26255a140f7f22c4ab77b1e9449f426ab32d42800f1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}