{
"manageEntity": {
"action": "Save",
"entityId": "1154543748",
"entityType": "Track",
"nonce": "1792314500378604332",
"signature": "0x7bc750cf8c8340eb425d0ef83b62b607f4f3d87517cebb73fe9d1ab66f764d7d50022a68efe6f438a2d269416ea06d0717fe04907892083aa4c5d583cb3e974d1b",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}