{
  "manageEntity": {
    "action": "Save",
    "entityId": "1480377482",
    "entityType": "Track",
    "nonce": "0x056a45e207619f8624d8436430f51bf7f9fbc20075c41aaa4eee2ec6e5e2bf56",
    "signature": "0x1e221c727ff3ae6d8778379bb33f93e61000b8b768dab97be86fe24759a407d2108972a93a92e0109b0f11960d3f963128ea1966e7e46f117fc5d796edb0920c1b",
    "signer": "0xE4cD33CA403714dEEc032635D51d9D3345c225d2",
    "userId": "967323686"
  }
}