{
  "manageEntity": {
    "action": "Save",
    "entityId": "1095529",
    "entityType": "Track",
    "nonce": "0x2a53978d6b990e5fd51fb9b4292cc452d83fe96d069b6273d23324266358edef",
    "signature": "0x25ffda2840af60f418f356ed64a6410564d859f1b9c2f69d7bf6e525e2921d683e2dabbf1086cd4dcc2a5a5dd5a5ea135c1ea2fbdac3df7927390a95ece977e91b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}