{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "175201368",
    "entityType": "User",
    "nonce": "0x783051621291fc758ad388e5ad22fb17342e736154a9e4712e6c42f94f4d1277",
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    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}