{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200945",
    "entityType": "User",
    "nonce": "0x24cee410aa50d95e19971f6699cba2d650e702731d8db0c5efb92a4826372820",
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    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}