{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753991",
    "entityType": "User",
    "nonce": "0x3d9f5bb08aa47253f8e15cbdd10e587c87d4b717695df86b5196866499014179",
    "signature": "0x04ebaf34dd2e233e4265f0af66a39ab1e7c7d1e6fabc18214c313d988ffa9cda0ef38764af319e7750f6e1a620a4adb624aee58e8c1c148dc4e69bf826b418d91b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}