{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "148903",
    "entityType": "User",
    "nonce": "0xe67f3e15de4df93e8921f1bba54c63185d51dad2b23a23b0caf39be055f9eb1f",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}