{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "918260774",
    "entityType": "User",
    "nonce": "0x73b0d1e7b29b39310fca63a9a53e6da6eb4c47af27cda30f77023d9e3e466be1",
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    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}