{
"manageEntity": {
"action": "Save",
"entityId": "1901056710",
"entityType": "Track",
"nonce": "1792464409195130583",
"signature": "0x56288a57e1a0e2d9529e10b08a1c24a3066e61006c4c75b717542f5cd3975f6041355fcc41418a63ea1cc2ae54f185a999a65dc60c3ea259ba4730934b5583981b",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}