{
"manageEntity": {
"action": "Save",
"entityId": "1855704865",
"entityType": "Track",
"nonce": "0xe79fba0cd8749d4d14a61e1259be336ff627b9d62101232fa0eda6630646743a",
"signature": "0xf6625bbb2ff956c243538a1a6b6f2beaefe44a44acfd9740c844b99c0e3dd74924f5ad531e3884efa3bc68cdba9b172056bb3e3dbf8eda4283ee4c5b1c26aa8e1c",
"signer": "0x98591a180A20DF036EB2C9D2c24B449E65939Df5",
"userId": "338604526"
}
}