{
"manageEntity": {
"action": "Save",
"entityId": "1901056710",
"entityType": "Track",
"nonce": "1792464421524509578",
"signature": "0xbc587d070db503180671567252a63a03d6d38fdca97db0cbba8492cec54045a56c76694aab5df7eb69d03a14e9cb4345e6b9891169198c53f14e835541ea26c91c",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}