{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77551267",
    "entityType": "User",
    "nonce": "0x3c359199966425e4beb9dd6e996062fb2349fde35c7a5740dc7285e6ea2785c2",
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    "signer": "0xD5207527A3A5f799aA45ab3dc2ad4CC7f3617253",
    "userId": "849737890"
  }
}