{
"manageEntity": {
"action": "Save",
"entityId": "1645475014",
"entityType": "Track",
"nonce": "0xe2e7f122e6622a8eba4e6a3d7af69ced5cf3d6aaf3ae44699648eb95bd9381bc",
"signature": "0x5def766479cd9dc5575d492a3beac27db54e2c848f296c088b0793c59882fb3742c3bbc6777ef518bbe5da221224f31e18766a936094c8c3bff925021093bdb11b",
"signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
"userId": "571117272"
}
}