{
  "manageEntity": {
    "action": "Save",
    "entityId": "1112336",
    "entityType": "Track",
    "nonce": "0xf0bbc6d9d6877b5e38c8223b04c36b6e1cbbe11947b6818226b82bd564c5ffe6",
    "signature": "0xee305f86427ac72eb39af0bde8475297c6727ee3255257baa45fd999f71221be35169039db860dd373dbf861fd15ce7f304be330b908ad0658051e35910418911c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}