{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "295516",
    "entityType": "User",
    "nonce": "0x648c4b0dce8fe16e51145bf74fe05a9b4df2205626ac27676c4381b5bc55c2b6",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}