{
"manageEntity": {
"action": "Save",
"entityId": "1335493045",
"entityType": "Track",
"nonce": "0xe3685c2552abd57ac2f6d4eb066bc3ea171e091220baff43cd5407d78b647816",
"signature": "0xb79ad273c995263b9be328c306eb68d37aa3e82a3eb5d33ffd2b96a7b1b33b9a7b12307a2a69f2f4257938feeb1baaff39dd7202e21fbd3f4c0dc740010cbace1c",
"signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
"userId": "620307004"
}
}