{
"manageEntity": {
"action": "Save",
"entityId": "1195361748",
"entityType": "Track",
"nonce": "1792540882168981268",
"signature": "0x3d9acd22d1ff90d4d711d481f29e2985189cead4043af5146c1175aa8776979b2e7b389f699626d34d49c9cf79120cb0feecefd16c9a1ac1defb53b1b1e9c4eb1c",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}