{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0xd940dd20bdfce710f5144f6c0e2acf3b87cc8384d5f1fe4b3a1feb839beffb55",
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    "signer": "0x1A523ec8B21411C3F7d611FD345362ad54805b2d",
    "userId": "230518"
  }
}