{
"manageEntity": {
"action": "Save",
"entityId": "992804706",
"entityType": "Track",
"nonce": "1792379808623886280",
"signature": "0x76223b70e8eeb03d31a0c563c2773e7b2e83686ec7c82b9241a282ab54f527ca0403b37e45b973906804c77332ce7df05de905b263bb52b26b5cf9051ff8bda51b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}