{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4946162d458a5eb03df80b18ba6126b11edcacfae05ec87941720ce52b65c499",
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    "signer": "0xB45BE7AD30D4e06C54A7F9AE77D0Edc1b3B58589",
    "userId": "917146802"
  }
}