{
  "manageEntity": {
    "action": "Save",
    "entityId": "1920190387",
    "entityType": "Track",
    "nonce": "0x33dd4c4c5fb142bc6bb77b7a3cc43042122a9ee23064f8d7df17f6e5ecc76ff3",
    "signature": "0xb1ba26806ee215238757710908dc4b739e4eeeb26b5a1173652ea0eb9b86643a001dfd4920186efcf4ace606712b218220308d1764589da2156995492b91602e1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}