{
  "manageEntity": {
    "action": "Save",
    "entityId": "241272",
    "entityType": "Track",
    "nonce": "0xace0007fbb8530100d70e14b84d98d789bf3685ff49c837fded32240bbf6b4da",
    "signature": "0x25443294b1b836c1c6d2375aab9fbf2ce903aa2872203851349ed2afa1953cb53d26c22b8e40ae5b0d1dfa0c95e82b111f1f2e74ba2e677bae417bb1b2e57bcd1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}