{
  "manageEntity": {
    "action": "Save",
    "entityId": "754229090",
    "entityType": "Track",
    "nonce": "0x5df306f3f945e6d702cc113f5349264a6273027ffb546e613a917054f5a55344",
    "signature": "0x1473f8de3cfba4766489bdb42b907d4f1ee7b405410113454cdec3d693491c387b01a4e68c9a85eaa6d281f1d4bc05aad3bf44b99ac20fed2df2bedf2a7e9a921b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}