{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1508862",
    "entityType": "User",
    "nonce": "0x731f031ab1e9170ed9c83247e271c20e8afabb55012bd58776026dcbf2dc4561",
    "signature": "0x9104af001eef87756e872f396810b7a1127e2f5a736b95badcb8ff2421ec94071959cd6a7c7edf3a74df1b46f42ef81b50ed162f9bae5858110c5df47add6f7c1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}