{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1873428",
    "entityType": "User",
    "nonce": "0x1c0ffcad26dade6fa39e625517793c14a82c7dae8492d382bfe61edd24ab5d32",
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    "signer": "0xB7FbBB4282208079CCDcA5f9209D3dbD873AFeAb",
    "userId": "400413076"
  }
}