{
  "manageEntity": {
    "action": "Save",
    "entityId": "1895052938",
    "entityType": "Track",
    "nonce": "0x9d6800d25279bc368d371a87f9f53436d27c7fdee1e7cb29fcc8fb9e26ac6626",
    "signature": "0xce87c2370872e6981b04962c2c437ae90c220a97e865506efb9f1e6dfc44ab147ba665ac052bf04072c0ce0bb122ae8ef534d46a6d4cfd401745acc18ea52a331b",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}