{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210840",
    "entityType": "User",
    "nonce": "0x912b55f280db0446a4e17e9b687ec6b5086c887dc69660a85ce48fedffd50a43",
    "signature": "0xcc38faa199b6e35d729bf0433681580da89ae8c6051c21a5e723818e44e31ab2573242a29042ecf66d12612b8486866e4269b4bf59c640305a3ca89ff8e240861b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}