{
"manageEntity": {
"action": "Save",
"entityId": "807110338",
"entityType": "Track",
"nonce": "1792467402137360426",
"signature": "0x878aa1f704f4eed01ce93a0dc356f9fd5f468afee5f50b34a7971eba4ed4f7bf5f118e73597e0616a9024282a23ef422002a4e53f7447f61f40b6a9ad7b641f11c",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}