{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x2ad20bd2d169f3e37820a6d6214b661e3cec43940821a52ab79331314a23febf",
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    "signer": "0xfeBBAF2B7d9F5bE3DAA34bEe70259f61ac4aB836",
    "userId": "139146722"
  }
}