{
  "manageEntity": {
    "action": "Save",
    "entityId": "1107060",
    "entityType": "Track",
    "nonce": "0x97bdade1bdbc51458e5289620046689ad59728d3e6a9a55b7d69d74acfe8a0e4",
    "signature": "0xd7c8d471bcbb1900ca46fb57ab11a547d023a165e9a6cb6638ea3d3672a13fea5766c6e3833973f12a1f60b5ba621af90c65143a4774f77b4e386472413e67a11c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}