{
  "manageEntity": {
    "action": "Save",
    "entityId": "1109418589",
    "entityType": "Track",
    "nonce": "0x01b1bdad32a3078fad5534102cc49eb7ee679bdb119788391561dd9551efb90c",
    "signature": "0x8c236ade9c8696ffb76d7a6cd5d497a9873d8da832b5f852138fc0637841f7336388ed60bdf02d6d61d259f24e42ca54644b55d2fa9989f9b8f917dce20f143f1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}