{
  "manageEntity": {
    "action": "Save",
    "entityId": "954468",
    "entityType": "Track",
    "nonce": "0xdd3a0b29bae681b913294fdfb8e8a2ce22ea7cb3c1bbeca8b0115e1afc9430db",
    "signature": "0x01a82d761df3806a66ee3b43d6d79c791ac7a17ed4d45968895c10c1eff267cd08b53deda220a485cce080c1e03783ae9ab6afc25a1454321d092c92cf15ad891b",
    "signer": "0xd9bA17330fFb3Ea1356C5eC14971D9e1f2cb5200",
    "userId": "337125448"
  }
}