{
"manageEntity": {
"action": "Save",
"entityId": "662377764",
"entityType": "Track",
"nonce": "0xcef939697eef95d280f206d07e032669d22cf5dac43c60493cbd586bdec0428b",
"signature": "0xdf14834190cc095d960d19ebe71e1616c94c04c368a5ed9c62d117a06f4f3355455005a6abf262d46c3d19308d62a50bf93a264ca0b875ee05d532264470106b1b",
"signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
"userId": "809803"
}
}