{
  "manageEntity": {
    "action": "Save",
    "entityId": "33886164",
    "entityType": "Track",
    "nonce": "0xad9862428b80a8b3b5f5d103182a0a7afe7b027d726eecf4acea550ea950db2d",
    "signature": "0xf46a7a0506d6d06ea7e87af8a27a288057adb1991bffc2d79e208ac75e4f107718634f398c6b21b5027067580ff4a3c57641ceebeb13b1c8b6fc2fa688af6cd01b",
    "signer": "0x261c17dd7171Ea18B7ffF1AbB7D0495fEa0dB0ad",
    "userId": "185086709"
  }
}