{
"manageEntity": {
"action": "Save",
"entityId": "578578052",
"entityType": "Track",
"nonce": "0xae4a2ad091af4367ec6c3f1314a3b522db896e9da717f218bdc085789a63dc77",
"signature": "0x0b45ab16b899b511c0819d44d6fd6281e54dd0612f84429a65826d82c101b45e2801251803f2f3c5ed6a4aa89b023ab34411ce8829e08fc4098056ad8002fb0d1b",
"signer": "0x568426a5D555ADe94657d547B2Df4a4dc1f0C014",
"userId": "71569007"
}
}