{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "475900419",
    "entityType": "User",
    "nonce": "0x6d78a22e84ea15ab5c35aa6b1d180ecf6aca2a538f39f61c3960cf450ee3daad",
    "signature": "0x89135464b8a0934db73fcd46ba0a4cf2aca7792f2037903597dc425290c8c29a7de45c6a3fcb1dedb485e2212ab4a2bb47f943ded7f1fda46252681029dfc9be1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}