{
"manageEntity": {
"action": "Save",
"entityId": "1672961719",
"entityType": "Track",
"nonce": "0x25cdd91d26328e271b1de2e675fb076adc88d2dc74c14e2df6d08553555e103a",
"signature": "0x3981430e8574e08d1f82eeb2a6c31974bf65ba786bfd87b6fe9ea9f4184517891aa2480b399d8f6f704150233a6fd52dbf483e84e50733552e44949d8acc4aae1c",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}