{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55290787",
    "entityType": "User",
    "nonce": "0xdda09fa1195758b5b6cc159b8dad36c31988ad2ea4cd7ac0e4bbf0bab145f8d5",
    "signature": "0x2b19399fd0a39f47fbca3404153a10267de4aa017cb30cbf4ce34d1762a1e7ea2661f4d531f99ccc1bb2e539e7ce6c7fe383f1e4dcc44ce626e8a9aafc5bc53f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}