{
"manageEntity": {
"action": "Save",
"entityId": "1009896374",
"entityType": "Track",
"nonce": "0x357076ce90805c10a0f9cbd5a4b33904a4a56a1dc45305117452c465ebd1d050",
"signature": "0xc2c0f79fdc0777ae8c0722f2ede9cb02b0eadc93de1bec7980eda91920ccb18f35540b3b848a72961e0d6ca51cd80ae654d05b8e6bd4c47c19f86836453044e91c",
"signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
"userId": "890889753"
}
}