{
"manageEntity": {
"action": "Save",
"entityId": "1231788806",
"entityType": "Track",
"nonce": "1792346256889167969",
"signature": "0xffe63411c58bc2e33398796e94585cee866a7eae603488aea5d400f0b0274fef2e345e5d17bf9eaa50a1d5dfe27a2c92474110d92721b720246304f5ede991121c",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}