{
"manageEntity": {
"action": "Save",
"entityId": "1780691444",
"entityType": "Track",
"nonce": "0x793b9830635b3ff692b53c328efc1bd4704443260a73848343c1e6af1682e26a",
"signature": "0x301bc3697596e96520f0b7764be358be91e9515063fd9a6be2330410cd4f1832385d759fe70877009d08927ab1d4eb5f8fe9cd001a768c37351d1aaadd42bfa71c",
"signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
"userId": "162770660"
}
}