{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3848",
    "entityType": "User",
    "nonce": "0xbfa772502a88b6bc43d910c9b735f40cd1b82f2bf5a3bd0327fc45c6bb25a4a2",
    "signature": "0xab7bdd4014cf9484dc670258e3404b6cace2e87f269c7183b7126faa1ad7636626b2f9b8a7595160292e65730bf6e2c83fd6090dc5eeaa6cfdcb8e9ab68204cb1c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}