{
  "manageEntity": {
    "action": "Save",
    "entityId": "113767058",
    "entityType": "Track",
    "nonce": "0xe1cc321c40446792629936a34ac6f976e614690fc0e70ddcce3301390cf5a50d",
    "signature": "0x61b073099a32ffe66e677168d4ab4b5953c5384cf218f79ea094964fa13476613298f37eecfb105da9854db0a5c9b24cc81595c913cfeb329a88fa75b32c08331c",
    "signer": "0xBf6365b7f0671453bF16D7485A52e45E2811fed8",
    "userId": "358871346"
  }
}