{
  "manageEntity": {
    "action": "Save",
    "entityId": "64988262",
    "entityType": "Track",
    "nonce": "1791863453755519797",
    "signature": "0x68f2737ce0a5d7f6e6f54582b5a35c9cd4a0f6eac8e5604f56c209c594c771a55e89c324f2d41ecec283ebd655b9c6fd033147856504af2f7a1629298db5e3421b",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}