{
  "manageEntity": {
    "action": "Save",
    "entityId": "1163075832",
    "entityType": "Track",
    "nonce": "0x021506b8ebb794c5cf5899eedafb4971d91da2c2f586513bb5f64dc791d349d9",
    "signature": "0x6742025576fa74381cc968d2c6a3b71c10ddcc9692852ef91890bc267f45d4d33678d705d87bc966641efa808126f2b5aba91912222932d189662687437881be1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}