{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1921",
    "entityType": "User",
    "nonce": "0x769d810b16bb58102421791f132e2831bb11fb7db719c4451c9dea3ebdd734b0",
    "signature": "0x984b5b946e9f513188d7945a3d73f93987362f522057c24dcedb506f510d4d6708256957e433cb90f10636946f2ccf3bfcfb34af3f8fb549de5d4f7522918eef1c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}