{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xaffd4c8a71cbf4a471d9402f945f08d1789fb2568c8b9d89031f8b76ae3150f0",
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    "signer": "0x4089d1751487aA665C895419F2578a6Cf33BE481",
    "userId": "728155533"
  }
}