{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "642319857",
    "entityType": "User",
    "nonce": "0xedfa2d4b3f9c44e993dec54b7e48a0e8e89c07d265384d176d4cfc65ee1e1c42",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}