{
  "manageEntity": {
    "action": "Save",
    "entityId": "1267258028",
    "entityType": "Track",
    "nonce": "0x51cc175da65be31095f33115d8d90bdce35515cd46b9cb51a3eb7fd864f4fe81",
    "signature": "0x243a1547c24a971c7d48470775afc78ac57f8a1399adc7f8dce71233654d223257d61d0c1f0299ab5e47d55c304759c98e05b932e22dc6b7678a51888cde358c1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}