{
"manageEntity": {
"action": "Save",
"entityId": "1963473695",
"entityType": "Track",
"nonce": "0x9f3b84d0d09e349b9a82473bb3508553d86f3f1999ee652a023c0244b2755606",
"signature": "0x2201fdbffc6d089300565b3eeb7f8cc1ccf7db1c6832395ee3514c973cc67e8d48a177ef28d580d9c0131ef1803c14ca26fe4ccca7f4a3519082e670fd14b97e1b",
"signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
"userId": "167557"
}
}