{
"manageEntity": {
"action": "Save",
"entityId": "968748879",
"entityType": "Track",
"nonce": "0xfc0c176675389f5175a2aa986520a65a14a55f8a6f19092350ce07e04281db34",
"signature": "0xb19dc648065887e4666ac08427f38ccfbc2a9bd88b715776c515849e06c0ee883ef40620bd7f896c0272b4089194e3a6cbdca6228302675346b09262b594e5cf1b",
"signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
"userId": "167557"
}
}