{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "578231820",
    "entityType": "User",
    "nonce": "0x3694daaa6939d385851ef30b6ed77a2c66349e2f34b8d50b93430dded3661f5e",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}