{
"manageEntity": {
"action": "Save",
"entityId": "1047772671",
"entityType": "Track",
"nonce": "0xdd9cb5de1e329d556224369e14335f656b5376093731a24b83dd145aaf262dd4",
"signature": "0xba7d31d4ee65bed509e13fd5982f1791b6e37c601080d19cc0d0e99a9feec2ed0db4bf7c6bd6de07b73779f3f6e996cd75699a37797d4445435c05ab707d3b201c",
"signer": "0xBfdED8688eB1Bb5A0032C8B877B9ecAF66e956A9",
"userId": "789015044"
}
}