{
  "manageEntity": {
    "action": "Save",
    "entityId": "1316379736",
    "entityType": "Track",
    "nonce": "0xfea822c4c9aabb55aeb897a824f70131b1db63b43ceef5a6d3758682722e4e0b",
    "signature": "0xfbe30f1b2f58a9b22613fd74300c299a1131797771becad4035913872feba6bc5edaa3f0f55e2bda0be5ae4eec9abe706f3c1fef03e9310a0a5832e793d9b84e1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}