{
"manageEntity": {
"action": "Save",
"entityId": "1816542465",
"entityType": "Track",
"nonce": "1792334436856562059",
"signature": "0x1e754b479c56009de57f1dea6a19295218e9aeebf84de9812176214de3c0de041347ef3d6602d06fe04dc9efd31aa6574386279d3d97ea21a5f28ec09b0411141c",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}